GENERAL INSTALLATION
- Ensure tiles are cleaned before installing the Flexatile flashing to ensure the butyl adhesive strips can have maximum effect when bonded to the tiles.
Remove roofing tiles to achieve an opening to fit the Roof Extenda Bracket.
- Bolt the angle bracket with the threaded rod & backing plate to the selected rafter with 2 x M12 bolts. Secure the brackets to the top plate with 2 x M10 coach screws through the two lower holes.
- Replace roof tiles, cutting a hole to allow the threaded rod to penetrate the roof.
- Remove the middle lining from the underside of the flexatile. Lubricate the top bracket with water and slide the flashing down the bracket.
- The top bracket is then wound down to the desired height and the lock nut tightened.
- Form an anti-capillary fold at the top of the base sheet.
- Remove the protective backing from the underside of the flashing, that is covering the butyl adhesive strips.
- Hand form the base all around the tile and apply pressure to the butyl adhesive side strip.
CARE INSTRUCTIONS
Roof Extenda recommends painting or powder coating brackets before installation. Brackets to be cleaned and inspected yearly and re-coated if required.
NOTE
Local Council or Shire approval may be required prior to construction. Engineer’s computations related to Roof Extenda Brackets are available on the website. Roof Extenda accepts no responsibility for the type of construction undertaken.
If located in a highly corrosive area, Roof Extenda recommends 316 Marine Grade Stainless Steel Brackets.

S500 FLEXATILE INSTALLATION GUIDE
BRACKET COMPUTATION REQUEST FORM
So we can best assist you with your project, please complete all sections of the computations form.
There is no cost to you for this service. However, fees may apply if independent certification is required.
Please allow 48 hours for a reply.
This request form covers pergola or carport flat roofs which are (≤15°) or pitched roofs (≤30°) with open gable ends.
Ensure wall top plate is 90mm or greater before proceeding with this form or bracket installation.
For complex roof shapes or where walls or enclosed gable ends are proposed, please contact us.
Complete the online form here
MILD STEEL & 316 MARINE GRADE STAINLESS STEEL
Roof Extenda works with its manufacturers to produce a quality product. Roof Extenda has both mild steel with a Zinc Hi Build coating & 316 Marine Grade Stainless Steel Brackets available.
The Zinc Hi Build brackets have a SurTec 688 passivation coating with SurTec 704 top coat sealer. Roof Extenda cannot provide any guarantees on the lifetime of the brackets, due to individual environmental conditions and recommends the following:
- The Mild Steel Brackets can be painted or powder coated prior to installation for additional corrosion protection.
- Mild Steel and Stainless Steel Brackets should be checked annually.
- If brackets show signs of corrosion, they can be replaced by a builder.
- For Mild Steel Brackets, clean and recoat if required. This can be easily applied to the exposed surfaces of the brackets.
If installing Roof Extenda Brackets in highly corrosive areas, we recommend you consider using Roof Extenda’s 316 Marine Grade Stainless Steel Brackets. Stainless steel brackets can still show signs of corrosion and should be checked and washed annually with mild detergent and water.