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Grandmaster

The Grandmaster range is Project Timber’s flagship collection of heavy...

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Showing 1–18 of 25 results

  • Grandmaster “Reverse Apex” D1000 Workshop – 11mm Pressure Treated Tongue and Groove

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    From £1587
    £1,428 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    8 x 8 10 x 8 12 x 8 16 x 8 10 x 10 12 x 10 16 x 10 20 x 10 10 x 12 12 x 12 16 x 12 20 x 12
  • Grandmaster Fusion D1000 Pent Dual Room – Pressure Treated Tongue and Groove (8ft Internal Depth)

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    From £2120
    £1,908 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    12 x 10 14 x 10 16 x 10 18 x 10 20 x 10
  • Grandmaster “Heavy Duty” D1000 Workshop Windowless – with Side Door – Pressure Treated Tongue and Groove

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    From £1649
    £1,484 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
  • "16mm Upgrade Available"

    Grandmaster Fusion “Classic” G1000 Summerhouse with Side Shed – 11mm Pressure Treated Tongue and Groove

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    From £2127
    £1,914 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
  • "16mm Upgrade Available"

    Grandmaster Diplomat “Classic” G1000 Summerhouse – 11mm Pressure Treated Tongue and Groove

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    From £1575
    £1,418 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
  • Grandmaster “Heavy Duty” D1000 Pent Shed – Pressure Treated Tongue and Groove (8ft Internal Depth)

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    From £1550
    £1,395 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    12 x 10 14 x 10 16 x 10 18 x 10 20 x 10
  • "16mm Upgrade Available"

    Grandmaster Alpine G1000 Summerhouse Cabin – Plain Side – 11mm Pressure Treated Tongue and Groove

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    From £4956
    £4,460 * with GM10 voucher
    Jul, 20th Mon*
    in-stock-status-icon In Stock

    Sizes

    16 x 9 20 x 9 16 x 12 20 x 12 16 x 14 20 x 14 16 x 16 20 x 16
  • Grandmaster Clubhouse Storeroom G1000 Summerhouse – 11mm Pressure Treated Tongue and Groove (8ft Internal Depth)

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    From £1862
    £1,676 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10
  • "16mm Upgrade Available"

    Grandmaster Diplomat “Classic” G1000 Summerhouse – Long Window – 11mm Pressure Treated Tongue and Groove

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    From £1634
    £1,471 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
  • "16mm Upgrade Available"

    Grandmaster Alpine G1000 Summerhouse Cabin – Long Windows – 11mm Pressure Treated Tongue and Groove

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    From £5107
    £4,596 * with GM10 voucher
    Jul, 20th Mon*
    in-stock-status-icon In Stock

    Sizes

    16 x 9 20 x 9 16 x 12 20 x 12 16 x 14 20 x 14 16 x 16 20 x 16
  • "16mm Upgrade Available"

    Grandmaster Diplomat Pavilion G1000 Summerhouse – 11mm Pressure Treated Tongue and Groove

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    From £9607
    £8,646 * with GM10 voucher
    Jul, 20th Mon*
    in-stock-status-icon In Stock

    Sizes

    12 x 16 14 x 16 16 x 16 20 x 16 12 x 20 14 x 20 16 x 20
  • "16mm Upgrade Available"

    Grandmaster Clubhouse G1000 Summerhouse – 11mm Pressure Treated Tongue and Groove (8ft Internal Depth)

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    From £1556
    £1,400 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    8 x 10 12 x 10 16 x 10 20 x 10 24 x 10
  • Grandmaster Heavy Duty D1000 Pent Shed Windowless – Pressure Treated Tongue and Groove (8ft Internal Depth)

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    From £1550
    £1,395 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    12 x 10 14 x 10 16 x 10 18 x 10 20 x 10
  • Grandmaster “Heavy Duty” D1000 Workshop – with Side Door – Pressure Treated Tongue and Groove

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    From £1649
    £1,484 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
  • "16mm Upgrade Available"

    Grandmaster Clockhouse Classic G1000 Summerhouse – 11mm Pressure Treated Tongue and Groove

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    From £1781
    £1,603 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
  • "16mm Upgrade Available"

    Grandmaster Alpine G1000 Summerhouse Cabin – 11mm Pressure Treated Tongue and Groove

    View Product arrow-right
    Select options
    From £4956
    £4,460 * with GM10 voucher
    Jul, 20th Mon*
    in-stock-status-icon In Stock

    Sizes

    16 x 9 20 x 9 16 x 12 20 x 12 16 x 14 20 x 14 16 x 16 20 x 16
  • Grandmaster “Heavy Duty” D1000 Workshop Windowless Shed – Offset Door – Pressure Treated Tongue and Groove

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    From £1396
    £1,256 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14
  • Grandmaster “Heavy Duty” D1000 Workshop Shed – Offset Door – Pressure Treated Tongue and Groove

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    From £1396
    £1,256 * with GM10 voucher
    Jun, 24th Wed*
    in-stock-status-icon In Stock

    Sizes

    8 x 8 10 x 8 12 x 8 14 x 8 16 x 8 18 x 8 20 x 8 22 x 8 24 x 8 8 x 10 10 x 10 12 x 10 14 x 10 16 x 10 18 x 10 20 x 10 22 x 10 24 x 10 8 x 12 10 x 12 12 x 12 14 x 12 16 x 12 18 x 12 20 x 12 22 x 12 24 x 12 8 x 14 10 x 14 12 x 14 14 x 14 16 x 14 18 x 14 20 x 14 22 x 14 24 x 14