Brett Martin TB431 Roof Lantern Installation Guide

Brett Martin TB431 Roof Lantern Installation Guide

Upstand Requirements

Construct finished, insulated and weathered builders upstand to dimensions above.
Roof covering must cover side and top of insulated upstand in accordance with manufacturer’s installation recommendations

NB there should be no excessive build up of layers, the top surface should be level and free from protrusions or projections which may prevent adequate weatherproofing.
Brett Martin Roof Lantern rooflights are intended for installation onto a fully weathered and insulated builders upstand on flat and low pitch roofs. The surface of flat roofs normally require some degree of pitch to ensure adequate water runoff. For aesthetic reasons we recommend that the upstand is built with 0° pitch i.e. not parallel with the pitched roof surface. The rooflight can accommodate being installed on an upstand with a pitch of up to 5° but please note that this will likely result in a ‘lopsided’ appearance.

Health & Safety

Warning: this product is designed for installation by professional roofing installers, who are responsible for establishing a safe method of work. All risks involved, including those involved in roof access and working around (and if necessary across) an open roof aperture must be assessed, and suitable precautions taken to minimise those risks, with a safe method of work established and documented for each project.
Instructions must be followed carefully and in the correct order otherwise warranty may be invalidated.

Safety Equipment Required

Tools Required

Contents

Additional contents – 6 pane option only

1. Assemble base frame

2. Apply sealant then rotate and position frame on upstand

3. Connect spider frame

6 pane option only

4. Fit spider frame to base frame

5. Fix unit to upstand through pre-drilled holes

6. Prepare glass

7. Fit glass to frame and align corners

8. Peel tape and position glazing clamps

9. Align and clip on hip outers (and rafter outers for 6 pane option)

10. Align and clip on ridge outer then fix down glazing clamps

11. Peel tape and clip on ridge caps

12. Attach hip caps

13. Attach rafter caps (6 pane option only)

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References

• Plastic Sheets Manufacturer | Rooflights | Plumbing & Drainage | Brett Martin

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