Apex Summerhouse 451 - Double Glazed, Low Level Glazing

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Apex Summerhouse 451 - Double Glazed, Low Level Glazing
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The pictures show the 12'x8' cedar summerhouse with optional cedar shingles.


This high quality multi purpose garden room or home office are 10' (3.0m), 12' (3.6m), 14' (4.2m), 16' (4.8m) wide. The depths are 8' (2.4m), 10' (3.0m), 12' (3.6m), 14' (4.2m), 16' (4.8m), 18' (5.4m). Features include double glazing as standard and a choice of deal or cedar cladding. Other quality features include double hinged doors, large pane glazing and a minimum internal height of 6'6" at the lowest point inside. Options include insulation with internal lining, decorative felt tiles and cedar shingles. Instructions are supplied for self assembly.

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  • All timber used in the construction of this summerhouse originates from sustainable forests
  • All timber treated by total immersion in a high quality preservative
  • Morticed and tenoned joinery doors and windows - if cedar cladding is specified the joinery doors and windows will also be made from cedar
  • Toughened double glazed doors and windows included as standard
  • Panoramic low level glazing with doors and sidelight windows fully glazed to the floor
  • 2 non opening fully glazed front windows (8', 10' and 12' wide summerhouses)
  • 4 non opening fully glazed front windows (14' and 16' wide summerhouses)
  • 2 fully glazed two pane side windows each with a top hinged opening fanlight window, one in each side wall
  • Fully glazed double opening hinged doors with mortice lock fitted
  • Chrome finish door handles and hinges
  • Pressure treated 2" x 2" floor joists (lifetime preservative treatment). Bearers not required
  • Strong ex 5" x 2" planed deal roof purlins (120mm x 45mm finished size after machining)
  • Strong ex 2" x 2" planed deal framework (45mm x 45mm finished sizes after machining)
  • 12mm deal tongued and grooved floor boards (finished size after machining)
  • 12mm deal tongued and grooved roof boards (finished size after machining)
  • Green mineral felted roof
  • External eaves height 6'8" (2041mm)
  • 10' wide buildings external ridge height 8'4" (2530mm)
  • 12' wide buildings external ridge height 8'8" (2635mm)
  • 14' wide buildings external ridge height 9'5" (2876mm)
  • 16' wide buildings external ridge height 9'9" (2980mm)

JOINERY DOORS AND WINDOWS: A feature of these quality summerhouses is the joinery doors and windows with morticed and tenoned joints throughout. These intricate joints are harder to pull apart and therefore stronger. The ends of the timber are also better protected and therefore more durable.

PLANED SHIPLAP CLADDING: These summerhouses feature smooth planed fully interlocking tongued and grooved shiplap wall cladding. This design ensures that rainwater drains faster and the timber dries quicker, which ensures a longer life for your summerhouse. Our shiplap is fully tongued and grooved which is stronger than the half lap shiplap or rebated shiplap used by some others.

HEAVY DUTY FRAMING: These heavy duty summerhouses feature exceptionally strong framing, which ensures a more robust and durable building. Framing timber is normally supplied in standard timber sizes. The nominal size is the size before machining. The finished size after planing is normally around 5mm smaller. Framing of at least 50x25mm or 38x38mm nominal thickness is recommended for smaller summerhouses up to 6'x8'. Framing of at least 50x38m nominal thickness is recommended for larger summerhouses up to 8'x10'. Framing of 2"x2" or 50x50mm nominal thickness or larger is recommended for the largest summerhouses.

TOUGHENED SAFETY GLASS: Toughened safety glass is around 6 times stronger than normal glass so it is less likely to break. When it does break, toughened glass breaks into harmless small pieces. This makes toughened glass the best option for all the family including children, pets and the elderly.

SIZES - DEPTH AND WIDTH: The sizes are listed alongside the price. The first dimension listed is the width and the second dimension is the depth. The width refers to the angled gable walls at the front and rear including the door wall. The depth refers to the side walls. The sizes listed are the external wall sizes. These sizes do not include the roof overhang. Many other suppliers quote the overall roof size which is much larger.

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