Alpine Grandmaster Long Window Summerhouse Cabin | Project Timber
Continue Shopping
My Account
Mon-Fri / 08:30 - 21:00  |  Sat-Sun / 10:00 - 20:00
PHONE LINES OPEN UNTIL 9:00PM CALL NOW
01777 802300
0
Basket

Project Timber accepts Visa, Mastercard, Maestro through our 100% secure SSL payment providers - WorldPay & PayPal.

cards
01777 802300 - Click here to call now!
Oops..
It appears you are visiting us on Internet Explorer 9 or earlier. Please upgrade to a later version of Internet Explorer. Alternatively, you can view our website on Google Chrome, Mozilla Firefox or Apple Safari.
FREE NEXT DAY DELIVERY
on selected postcodes*
15-YEAR ANTI-ROT GUARANTEE
Terms and conditions apply
FREE PRESSURE TREATMENT
on selected products*
0% APR
with £0 deposit

Disclaimer : Painted buildings are for illustration purposes only. All buildings are in their standard or pressure treated colour upon delivery where the colour may vary from those shown. Adequate distance must be kept between the boundary and your building to allow access to apply the annual treatment to comply with the anti-rot guarantee*.

What our customers say

  • James, Merseyside
    "Fantastic communication and great service. Excellent quality shed. Would highly recommend."
FREE NEXT DAY OR PICK A DATE DELIVERY ON CHECKOUT

Grandmaster Alpine Summerhouse Cabin – Long Windows – Pressure Treated

Plain Side Version Click Here

Free Anti-Rot Treatment - Guaranteed for 15 years*
  • Pressure Treated as standard*
  • Easy Assembly
  • Free Delivery from 48Hrs*
  • Shatter Resistant Styrene Glazing
  • Upgrade to Glass Double Glazing

£3,999
£3,599
For 10% discount use code SPRING10

1 Choose your treatment

  • Standard Dip Treatment
  • FREE PRESSURE TREATMENT
    WORTH £0
In stock
Mortice lock and lockable windows
Extra tall inside
Stronger and taller double doors
16mm cladding upgrade
15 year anti rot guarantee
Fully opening windows

2 Choose your size

Increase your workspace with our larger sizes.

  • 16ft x 9ft pressure treated grandmaster long window alpine summerhouse
    16 x 9
    - £3999
    £3,999 £3,599
  • 16ft x 12ft pressure treated grandmaster long window alpine summerhouse
    16 x 12
    - £3999
    £4,499 £4,049
  • 20ft x 9ft pressure treated grandmaster long window alpine summerhouse
    20 x 9
    - £3999
    £4,699 £4,229
  • 16ft x 14ft pressure treated grandmaster long window alpine summerhouse
    16 x 14
    - £3999
    £4,899 £4,409
  • 16ft x 16ft pressure treated grandmaster long window alpine summerhouse
    16 x 16
    - £3999
    £5,199 £4,679
  • 20ft x 12ft pressure treated grandmaster long window alpine summerhouse
    20 x 12
    - £3999
    £5,199 £4,679
  • 20ft x 14ft pressure treated grandmaster long window alpine summerhouse
    20 x 14
    - £3999
    £5,599 £5,039
  • 20ft x 16ft pressure treated grandmaster long window alpine summerhouse
    20 x 16
    - £3999
    £5,899 £5,309

4 Choose your window and door type

Please Note: Our Styrene Standard Modern Single Glazed windows and doors are for seasonal use. Should you want to use your garden building all year round, please upgrade to our Toughened Glass Premium Modern Double Glazed windows & doors.

Please note: UPVC will increase the lead time of the building. Please contact us before placing your order.

Details

X

  • Single Glazing

    We offer single shatter-resistant styrene glazing as standard on our timber windows and doors. Styrene glazing is a more seasonal option but also more cost-effective if you are only planning to use your building in the warmer months.

  • Double Glazing

    For a building you can use all year round, you can upgrade to our double glazing option for your windows and doors. Our double glazing is made from 4mm toughened glass with a 6mm cavity. This option also provides better security compared to our single styrene glazing. We also recommend that you upgrade to our premium brass fixings if you choose to have double glazing on your building.

  • UPVC Features

    For the ultimate garden building that you can use all year round, we offer our premium quality UPVC windows and doors. Our UPVC option offers increased security with a deadlock locking system on our doors, and also comes double glazed with toughened glass as standard. This helps lock in the temperature, which is perfect if you are planning on insulating your building..

  • Timber Windows and Doors - Single Glazed
    £0
  • Timber Windows and Doors - Double Glazed
    £202 With Discount-10% £182

5 Choose your panel and windows

Details watch

X

  • Panels and Window Options

    So you can have a building that is fully tailored to your requirements, we have added glazing and window options for you to choose from. You can choose if you want to have your front windows fixed or opening. We also give you the choice to have your windows and doors with single styrene glazing or double toughened glass.

    If you want to fully upgrade your window and doors for extra security and u-values, then our UPVC window and door option is a perfect choice. You can also choose from our range of colours for a building you can really make your own.

  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £0
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £0
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £0
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £0
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £0
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £0
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £0
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £0
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £48 With Discount-10% £43
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £48 With Discount-10% £43
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £48 With Discount-10% £43
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £48 With Discount-10% £43
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £48 With Discount-10% £43
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £48 With Discount-10% £43
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £59 With Discount-10% £53
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £59 With Discount-10% £53
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £69 With Discount-10% £62
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £69 With Discount-10% £62
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £69 With Discount-10% £62
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £69 With Discount-10% £62
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £69 With Discount-10% £62
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £69 With Discount-10% £62
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £80 With Discount-10% £72
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £80 With Discount-10% £72
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £80 With Discount-10% £72
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £80 With Discount-10% £72
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £80 With Discount-10% £72
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £80 With Discount-10% £72
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £80 With Discount-10% £72
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £85 With Discount-10% £77
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £85 With Discount-10% £77
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £85 With Discount-10% £77
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £85 With Discount-10% £77
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £91 With Discount-10% £82
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £101 With Discount-10% £91
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £101 With Discount-10% £91
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £101 With Discount-10% £91
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £101 With Discount-10% £91
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £101 With Discount-10% £91
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £101 With Discount-10% £91
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £101 With Discount-10% £91
  • Plain Sides Fixed Windows (Standard Modern Single Glazed)
    £101 With Discount-10% £91
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £101 With Discount-10% £91
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £112 With Discount-10% £101
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £112 With Discount-10% £101
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £112 With Discount-10% £101
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £112 With Discount-10% £101
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £119 With Discount-10% £107
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £122 With Discount-10% £110
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £122 With Discount-10% £110
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £122 With Discount-10% £110
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £122 With Discount-10% £110
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £122 With Discount-10% £110
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £122 With Discount-10% £110
  • 1 Side Fixed Window (Standard Modern Single Glazed)
    £122 With Discount-10% £110
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £122 With Discount-10% £110
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £128 With Discount-10% £115
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £133 With Discount-10% £120
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £133 With Discount-10% £120
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £138 With Discount-10% £124
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £138 With Discount-10% £124
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £144 With Discount-10% £130
  • 2 Side Fixed Windows (Standard Modern Single Glazed)
    £144 With Discount-10% £130
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £149 With Discount-10% £134
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £154 With Discount-10% £139
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £154 With Discount-10% £139
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £159 With Discount-10% £143
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £170 With Discount-10% £153
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £175 With Discount-10% £158
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £181 With Discount-10% £163
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £186 With Discount-10% £167
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £186 With Discount-10% £167
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £186 With Discount-10% £167
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £186 With Discount-10% £167
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £186 With Discount-10% £167
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £186 With Discount-10% £167
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £197 With Discount-10% £177
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £197 With Discount-10% £177
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £197 With Discount-10% £177
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £197 With Discount-10% £177
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £197 With Discount-10% £177
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £197 With Discount-10% £177
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £202 With Discount-10% £182
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £207 With Discount-10% £186
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £218 With Discount-10% £196
  • Plain Sides Opening Windows (Standard Modern Single Glazed)
    £223 With Discount-10% £201
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £228 With Discount-10% £205
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £228 With Discount-10% £205
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £228 With Discount-10% £205
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £239 With Discount-10% £215
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £239 With Discount-10% £215
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £239 With Discount-10% £215
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £239 With Discount-10% £215
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £250 With Discount-10% £225
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £250 With Discount-10% £225
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £250 With Discount-10% £225
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £260 With Discount-10% £234
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £260 With Discount-10% £234
  • 1 Side Opening Window (Standard Modern Single Glazed)
    £260 With Discount-10% £234
  • 2 Side Opening Windows (Standard Modern Single Glazed)
    £260 With Discount-10% £234
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £271 With Discount-10% £244
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £271 With Discount-10% £244
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £275 With Discount-10% £248
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £275 With Discount-10% £248
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £286 With Discount-10% £257
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £286 With Discount-10% £257
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £292 With Discount-10% £263
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £292 With Discount-10% £263
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £292 With Discount-10% £263
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £292 With Discount-10% £263
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £292 With Discount-10% £263
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £292 With Discount-10% £263
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £292 With Discount-10% £263
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £296 With Discount-10% £266
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £296 With Discount-10% £266
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £307 With Discount-10% £276
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £307 With Discount-10% £276
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £313 With Discount-10% £282
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £313 With Discount-10% £282
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £324 With Discount-10% £292
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £324 With Discount-10% £292
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £324 With Discount-10% £292
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £324 With Discount-10% £292
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £334 With Discount-10% £301
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £334 With Discount-10% £301
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £356 With Discount-10% £320
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £356 With Discount-10% £320
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £360 With Discount-10% £324
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £366 With Discount-10% £329
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £366 With Discount-10% £329
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £366 With Discount-10% £329
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £366 With Discount-10% £329
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £370 With Discount-10% £333
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £371 With Discount-10% £334
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £377 With Discount-10% £339
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £377 With Discount-10% £339
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £377 With Discount-10% £339
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £381 With Discount-10% £343
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £387 With Discount-10% £348
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £387 With Discount-10% £348
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £387 With Discount-10% £348
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £387 With Discount-10% £348
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £387 With Discount-10% £348
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £392 With Discount-10% £353
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £398 With Discount-10% £358
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £398 With Discount-10% £358
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £398 With Discount-10% £358
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £409 With Discount-10% £368
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £409 With Discount-10% £368
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £409 With Discount-10% £368
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £423 With Discount-10% £381
  • Plain Sides Fixed Windows (Premium Modern Double Glazed)
    £424 With Discount-10% £382
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £430 With Discount-10% £387
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £430 With Discount-10% £387
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £430 With Discount-10% £387
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £440 With Discount-10% £396
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £451 With Discount-10% £406
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £462 With Discount-10% £416
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £462 With Discount-10% £416
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £472 With Discount-10% £425
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £472 With Discount-10% £425
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £472 With Discount-10% £425
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £472 With Discount-10% £425
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £483 With Discount-10% £435
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £483 With Discount-10% £435
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £483 With Discount-10% £435
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £493 With Discount-10% £444
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £493 With Discount-10% £444
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £493 With Discount-10% £444
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £493 With Discount-10% £444
  • 1 Side Fixed Window (Premium Modern Double Glazed)
    £493 With Discount-10% £444
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £504 With Discount-10% £454
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £504 With Discount-10% £454
  • Plain Sides Opening Windows (Premium Modern Double Glazed)
    £504 With Discount-10% £454
  • 1 Side Opening Window (Premium Modern Double Glazed)
    £504 With Discount-10% £454
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £515 With Discount-10% £464
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £515 With Discount-10% £464
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £525 With Discount-10% £473
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £525 With Discount-10% £473
  • 2 Side Fixed Windows (Premium Modern Double Glazed)
    £536 With Discount-10% £482
  • 2 Side Opening Windows (Premium Modern Double Glazed)
    £536 With Discount-10% £482

6 Choose your floor

Details watch

X

  • 11mm Floor

    Pressure treated 11mm tongue and groove Floor Boards. Standard option.

  • 19mm Floor

    Pressure Treated 19mm tongue and groove floor boards - select this option for medium use, if you intend on having furniture in the building and using occasionally.

  • 28mm Floor

    Pressure Treated 28mm tongue and groove floor boards. Select this option for Heavy use. This may include Gym/ heavy furniture use or heavy all year round use.

  • 11mm T&G Floor
    £0
  • 11mm T&G Floor
    £0
  • 11mm T&G Floor
    £0
  • 11mm T&G Floor
    £0
  • 11mm T&G Floor
    £0
  • 11mm T&G Floor
    £0
  • 11mm T&G Floor
    £0
  • 11mm T&G Floor
    £0
  • 19mm T&G Floor
    £331 With Discount-10% £298
  • 19mm T&G Floor
    £332 With Discount-10% £299
  • 19mm T&G Floor
    £386 With Discount-10% £347
  • 28mm T&G Floor
    £395 With Discount-10% £356
  • 19mm T&G Floor
    £413 With Discount-10% £372
  • 19mm T&G Floor
    £451 With Discount-10% £406
  • 19mm T&G Floor
    £482 With Discount-10% £434
  • 19mm T&G Floor
    £512 With Discount-10% £461
  • 28mm T&G Floor
    £597 With Discount-10% £537
  • 19mm T&G Floor
    £633 With Discount-10% £570
  • 28mm T&G Floor
    £649 With Discount-10% £584
  • 28mm T&G Floor
    £654 With Discount-10% £589
  • 28mm T&G Floor
    £736 With Discount-10% £662
  • 28mm T&G Floor
    £817 With Discount-10% £735
  • 28mm T&G Floor
    £885 With Discount-10% £797
  • 28mm T&G Floor
    £953 With Discount-10% £858

7 Choose your roof cover

Details watch

X

  • Roof Covering Option - Mineral Felt

  • Coloured Felt Tile - Black

  • Coloured Felt Tile - Green

  • Coloured Felt Tile - Grey

  • Roof Covering Option - Rubber Roof

  • Mineral Felt
    £0
  • Mineral Felt
    £0
  • Mineral Felt
    £0
  • Mineral Felt
    £0
  • Mineral Felt
    £0
  • Mineral Felt
    £0
  • Mineral Felt
    £0
  • Mineral Felt
    £0
  • Black Felt Tiles
    £281 With Discount-10% £253
  • Green Felt Tiles
    £281 With Discount-10% £253
  • Grey Felt Tiles
    £281 With Discount-10% £253
  • Black Felt Tiles
    £308 With Discount-10% £277
  • Green Felt Tiles
    £308 With Discount-10% £277
  • Grey Felt Tiles
    £308 With Discount-10% £277
  • Black Felt Tiles
    £314 With Discount-10% £283
  • Green Felt Tiles
    £314 With Discount-10% £283
  • Grey Felt Tiles
    £314 With Discount-10% £283
  • Black Felt Tiles
    £368 With Discount-10% £331
  • Green Felt Tiles
    £368 With Discount-10% £331
  • Grey Felt Tiles
    £368 With Discount-10% £331
  • Black Felt Tiles
    £384 With Discount-10% £346
  • Green Felt Tiles
    £384 With Discount-10% £346
  • Grey Felt Tiles
    £384 With Discount-10% £346
  • Black Felt Tiles
    £419 With Discount-10% £377
  • Green Felt Tiles
    £419 With Discount-10% £377
  • Grey Felt Tiles
    £419 With Discount-10% £377
  • Black Felt Tiles
    £448 With Discount-10% £403
  • Green Felt Tiles
    £448 With Discount-10% £403
  • Grey Felt Tiles
    £448 With Discount-10% £403
  • Black Felt Tiles
    £522 With Discount-10% £470
  • Green Felt Tiles
    £522 With Discount-10% £470
  • Grey Felt Tiles
    £522 With Discount-10% £470
  • Rubber Roof
    £1,067 With Discount-10% £960
  • Rubber Roof
    £1,244 With Discount-10% £1,120
  • Rubber Roof
    £1,265 With Discount-10% £1,139
  • Rubber Roof
    £1,422 With Discount-10% £1,280
  • Rubber Roof
    £1,619 With Discount-10% £1,457
  • Rubber Roof
    £1,654 With Discount-10% £1,489
  • Rubber Roof
    £1,779 With Discount-10% £1,601
  • Rubber Roof
    £1,956 With Discount-10% £1,760

8 Choose your paint colour

Details watch

X

  • Doormouse

    Doormouse Paint

  • Doulting Stone

    Doulting Stone Paint

  • Foxwhelp Red

    Foxwhelp Red Paint

  • Goblin Blue

    Goblin Blue Paint

  • Moreland Green

    Moreland Green Paint

  • Rock Rose

    Rock Rose Paint

  • Sedge Green

    Sedge Green Paint

  • None
    £0
  • None
    £0
  • None
    £0
  • None
    £0
  • None
    £0
  • Doormouse Grey
    £163 With Discount-10% £147
  • Doulting Stone
    £163 With Discount-10% £147
  • Foxwhelp Red
    £163 With Discount-10% £147
  • Goblin Blue
    £163 With Discount-10% £147
  • Moorland Green
    £163 With Discount-10% £147
  • Sedge Green
    £163 With Discount-10% £147
  • Doormouse Grey
    £188 With Discount-10% £169
  • Doulting Stone
    £188 With Discount-10% £169
  • Foxwhelp Red
    £188 With Discount-10% £169
  • Moorland Green
    £188 With Discount-10% £169
  • Sedge Green
    £188 With Discount-10% £169
  • Goblin Blue
    £188 With Discount-10% £169
  • Doormouse Grey
    £227 With Discount-10% £204
  • Goblin Blue
    £227 With Discount-10% £204
  • Foxwhelp Red
    £227 With Discount-10% £204
  • Doulting Stone
    £227 With Discount-10% £204
  • Moorland Green
    £227 With Discount-10% £204
  • Sedge Green
    £227 With Discount-10% £204
  • Doormouse Grey
    £231 With Discount-10% £208
  • Doulting Stone
    £231 With Discount-10% £208
  • Foxwhelp Red
    £231 With Discount-10% £208
  • Moorland Green
    £231 With Discount-10% £208
  • Goblin Blue
    £231 With Discount-10% £208
  • Sedge Green
    £231 With Discount-10% £208
  • Doormouse Grey
    £246 With Discount-10% £221
  • Goblin Blue
    £246 With Discount-10% £221
  • Foxwhelp Red
    £246 With Discount-10% £221
  • Moorland Green
    £246 With Discount-10% £221
  • Doulting Stone
    £246 With Discount-10% £221
  • Sedge Green
    £246 With Discount-10% £221

9 Choose your colour trim

Details watch

X

  • Swan White

    Swan White Trim Paint

  • Chantry Cream

    Chantry Cream Trim Paint

  • None
    £0
  • Swan White
    £63 With Discount-10% £57
  • Chantry Cream
    £63 With Discount-10% £57

£0

  • Size, Wall Thickness, Window and Door Type, Panel and Windows, Floor, Roof Cover, Paint Colour, Colour Trim → Please choose an option.

Available for delivery in 5-10 working days.

Disclaimer : Painted buildings are for illustration purposes only. All buildings are in their standard or pressure treated colour upon delivery. A distance of 1m must be kept between the boundary and your building to allow access for annual treatment and to comply with the anti-rot guarantee*.

PARTITION WALL

Looking for a bigger, more luxurious garden summerhouse that’s practically a home away from home? Then look no further than the Pressure Treated Alpine Grandmaster Long Window Summerhouse Cabin. There’s plenty of space for you and your guests to enjoy the warm UK summer from the comfort of your garden. Wide spacious windows will allow plenty of sunlight to enter the building, and the extra tall inner structure will make you feel like you’re right at home. With lots of customisable options, your new summerhouse will be perfectly suited for your outdoor space.

High quality materials

We only use the very best materials for our garden buildings.

15 Year anti rot guarantee*

Peace of mind that your building will stand proud for years.

Longer lasting

Our buildings are designed to last.

Thicker and doubled up framing

27mm x 44mm panel framing – thicker than standard. Key supports are doubled up to 54mm for extra support.

11mm and 16mm Shiplap options available

Choose between 11mm and 16mm shiplap.

Extra high ridge and eaves height

Extra Tall Building

Partition wall options available

Partition wall options available

Double summerhouse doors

Easy access with extra tall and extra wide fully glazed doors

Long fixed windows as standard. Upgrade to opening windows

Upgrade to opening windows.

Alpine roof style with an overhang

Roof Style with overhang

Multiple sizes available

Range of sizes available

Single or double glazing options

For extra light and panoramic views of your garden.

Fully boarded tongue and groove roof

Fully boarded tongue and groove roof

3 tongue and groove floor thicknesses available

Pressure treated runners with multiple floor thicknesses available

Multi purpose interior

Suitable for all year round use

Mineral felt is included as standard. Upgrade to rubber roof

Protection from the elements

Roof Material

Our signature mineral felt is included as standard

Pre-assembled panels that fit through your door

Pre-assembled panels that fit through your door

All fixings and stage by stage instructions included

Simple assembly for a quick and easy build.

Select options
SCROLL UP TO SEE YOUR BUILDING
  • Size
    Please Select..
  • Wall Thickness
    11mm Shiplap
  • Window and Door Type
    Please Select..
  • Panel and Windows
    Please Select..
  • Floor
    Please Select..
  • Roof Cover
    Please Select..
  • Paint Colour
    Please Select..
  • Colour Trim
    Please Select..
        


            

                   
                
Buy Now
 
            

            

                                                                                
                                
                

                                                                    
                                                                        
                                                PRICE
                                                                                                                                                
                                                    
£3,999

                                                
                        
£3,599


                                                                                        
                

                
Delivery from Wed 14 May*
     
                
                                
                                
                
                
                
                
                

                
            

        

    

    
    















		
	

		
	





     



   



    



    




        




            




                



            




            
Check Delivery Time




            
Simply enter your postcode to customise delivery times to your address.




            




                




                    



                    



                    




					Click here for more delivery details.



                




                



            




        




        




    




    




        




            




                



            




            
Request a callback