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1291mm 

(7x5 Measur

ement)

498mm

580mm

28mm

Z-BRACKET

PREPARATION

Before placing the OSB roof sheets onto the roof,

 screw the 

roof support strips 

along the edge of the OSB roof sheets. 

Ensuring they are flush to the edges. Add one strip onto each 

sheet as shown below. The strip will be the same length as one 

side of the sheet.

PREPARATION:

 Attach the 

Z-brackets onto the face at 

both ends on all the beams as 

shown below. The beam should 

be flush to the Z-bracket.

ATTACHMENT:

 Screw the Z-brackets 

onto both 

of the Apex Section frames 

to secure the beams 

as shown below. Use the measurements provided. 

Ensure you are measuring to and from the beams 

and the inner wall panel frame shown below.

ROOF STRUCTURE

5a

ATTACHMENT

412mm

500mm

498mm

580mm

7X5 MEASUREMENTS

6X4 MEASUREMENTS

Ensure the 

Z-brackets are 

in this position 

to screw onto 

the Apex 

Sections 

frame.

482mm

564.5mm

8x6 MEASUREMENT

7x7 MEASUREMENT

1105mm 

(8x6 Measur

ement)

1291mm 

(7x7 Measur

ement)

Before placing the OSB roof sheets onto the roof,

 

screw the roof support strips 

along the edge of the 

OSB roof sheets. Ensuring they are flush to the edges. 

Add one strip onto each sheet as shown below. The 

strip will be the same length as one side of the sheet.

TOP TIP: 

Layout all the truss components.

Assemble the truss

 and screw the U-brackets into the 

center of each beam as shown below. Ensure the truss 

support brackets are added first and flush to the edge of 

the central beams to establish the correct angle.

Secure the

 

support

 

bracket hanger

 

with screws into the center of your 

summerhouse. There needs to be one at 

each side. 

Screw the truss to the support bracket hangers.

 

As a result the truss will be centralised inside your 

summerhouse and facing the Apex sections.

28mm

Z-BRACKET

U-BRACKET

PREPARATION:

 Attach the Z-brackets 

onto the face of one end of each 

beam as shown below. The beam 

should be flush to the Z-bracket.

ATTACHMENT:

 Secure the 

other end of the beams to 

the U-brackets on the truss by 

screwing from the underside of 

the beam.

Screw the Z-brackets

 

that are already attached 

to beams 

onto the apex 

section frame. 

PREPARATION

ATTACHMENT

Ensure the Z-brackets 

are in this position to 

screw onto the apex 

sections frame.

PRE-DRILL 

WITH 5MM BIT 

FOR BOLTS.

9

7X5 ROOF ASSEMBLY

PRE-DRILL 

WITH 2MM BIT 

FOR ALL STEPS 

BELOW.

7X7 & 8X6 ROOF ASSEMBLY

PRE-DRILL 

WITH 2MM BIT 

FOR ALL STEPS 

BELOW.

Summary of Contents for OPASUM75M

Page 1: ...te for spare instructions and more information www forestgarden co uk G Forest Garden Oak Drive Hartlebury Trading Estate Hartlebury Worcestershire DY10 4JB Thank you for purchasing your summerhouse from Forest Garden Simply follow these step by step instructions and our top tips and you ll be enjoying your summerhouse for many years to come If you have any questions or need advice our friendly te...

Page 2: ...0 Turn Buttons QTY 3 50mm L Brackets QTY 4 Cranked Hinges QTY 6 Z Brackets 28mm QTY 8 Tower Bolt QTY 1 1 6 x 30mm Panel Pins QTY 6 1 6 x 30mm Panel Pins QTY 12 If you have purchased the 7x5 summerhouse your specific contents are listed below You will have a slightly different roof assembly compared to the 7x7 and 8x6 Don t worry these generic steps are provided for your step by step build Don t wo...

Page 3: ...ou check that it is level and doesn t deviate by any more than 15mm from edge to edge If this isn t the case the building will twist causing gaps to appear in the sections and the roof doors and windows to misalign There s more information on base preparation on our website www forestgarden co uk Assembly is relatively straightforward if your follow these step by step instructions We recommend get...

Page 4: ... THE GROUND Ideally any concrete base should be the same footprint as the summerhouse to allow surface water to run off without pooling a timber summerhouse base can also be used Raise 50mm above ground level 2 SEAL THE BASE We recommend a treatment containing wax or oil paint the bearers that come into contact with the ground to prevent moisture coming up 3 USE AN END GRAIN PROTECTOR To protect t...

Page 5: ...ections where same size panels are interchangeable IDENTIFY YOUR SUMMERHOUSE From the section layout below identify your summerhouse based on the width and depth dimensions of your summerhouse eg 7x5 You ll need this to identify the side panel positions 5 F E C B B A A APEX 7 5 C A A B B F E F A A APEX 7 7 F A A F F APEX 6 8 F D D D F D Indicates the panel orientation during construction This will...

Page 6: ...ew the door batten down Attach the Apex section by screwing it into the centre of the wall panels and repeat for the other Apex Section 6 EG INTO FLOOR EG SIDES Layout the panels around your summerhouse base Position the floor in your desired location If you have 2 floors turn the floors upside down to secure the sections together by screwing through the adjoining bearers We recommend to start in ...

Page 7: ...e PRE DRILL WITH 2MM BIT FOR ALL STEPS BELOW PRE DRILL WITH 2MM BIT FOR ALL STEPS BELOW LONG SINGLE WINDOW ASSEMBLY PRE DRILL WITH 2MM BIT FOR ALL STEPS BELOW Apply the longer window pane into position Position the window pane onto the Z Strip Trim the Z Strip if necessary Place the 15x12mm beading onto the Z Strip and up against the window pane Secure into place with 3 x panel pins per window Sec...

Page 8: ...16x1583mm Attach the cover strips onto the corners Ensuring they are flush to the bottom edge of the panels as shown below Attach the cover strips onto the adjoining panels Ensuring it is flush to the bottom edge of the panels as shown below Secure the door hinge strips Ensure they re in contact with the door batten and against the door weather strips SIDE WEATHER STRIPS 50x12x1667mm OUTSIDE OUTSI...

Page 9: ...the edges Add one strip onto each sheet as shown below The strip will be the same length as one side of the sheet TOP TIP Layout all the truss components Assemble the truss and screw the U brackets into the center of each beam as shown below Ensure the truss support brackets are added first and flush to the edge of the central beams to establish the correct angle Secure the support bracket hanger ...

Page 10: ...ndow Cover Strip 28x16x550mm 4 28160550PT Window Cover Strip 28x16x550mm 6 28281200PBNPT Canopy Strip 28x28x1200mm 1 28280534PT Interior Sill 28x28x534mm 2 28280548PT Interior Sill 28x28x548mm 4 50121667PPT Door Weather Strips 50x12x1667mm 2 28281507 Roof Support Strip 28x28x1507mm 2 28281049 Roof Support Strip 28x28x1049mm 4 45121650PPT Door Hinge Strips 45x12x1650mm 2 28281143PT Door Batten 28x2...

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