To be installed on the inside of existing buildings

The major problem with using profile cut flashings is shrink and creep of the wall sheets. This may be due to deliberate shrinking or expanding of the sheets, or the sheets being pulled apart or pushed together at the joint by installers to run plumb with the building. It can also be caused by sheet and roll-mill variations.

Retroseal Domestic addresses these problems being made in sheet widths, so the creep or shrink of each wall sheet doesn’t progress.

Fitting and Fixing
Ideally the tabs on each flashing length will sit centrally in the sheet profiles. Where this does not occur, you may need to cut a little off the end of the preceding length (a drop saw is good for this). In the case of high profile products, such as Code 1 – such as Trimdek, Monoclad etc, where two profiles fit neatly, and the third and fourth profiles progress off-centre, cut it in half between the second and third profile. For Code 2 – Corrugated, cut at the appropriate place to allow profiles to fit snugly into the wall sheet. Some trimming of the lengths may be necessary. Other times the thickness of the saw blade is enough.

With the tab profiles up, squash the lower fin of the flashing between the over-hanging wall sheet and the edge of the concrete slab, with the fingerlip touching the floor. It may be necessary to loosen screws on the bottom girt if the wall sheet is hard against the concrete. However, you can usually force it in.

Where the flashing is tight between concrete and wall sheet, a few dobs of silicon under the fingerlip can be used as a securement. However, the flashing can be fixed more substantially at its vertical face to the sheet pan area by a 10/16 tek screw or equivalent, particularly if a gap exists (can cover up to a 27mm gap).

One of the best ways to do this is to drill a hole from the inside out with a smaller bit than the screw being used (while maintaining a position to effect the neatest finish), with a second person screwing a tek back from the outside, using the hole as a pilot (careful not to overscrew). The ideal screw position is beside the sheet profile for high profile sheets, and in the valley for corrugated sheets. Use enough screws to achieve the desired finish. Pop rivets have also been used successfully.

NOTE: Store Retroseal Domestic out of the sun prior to installation in hot climates.

No other products have the combined benefits of the RETROSEAL range


We have a range of products that suit vermin proofing, ember seals, bushfire protection, bushfire seals, and for repairing your shed, renovating your shed, building a shed and buying a shed, shed parts, shed windows, shed doors and shed brackets.