Geotec Lead Underlay

Our underlay is supplied in rolls of 25m x 1m. You’ll find it very easy to work with. The underlay doesn’t rot. And it doesn’t adhere to the lead. But it does make a wonderfully smooth surface to lay the lead sheet on. If there are any variations or imperfections in the roof deck, the lead underlay will help protect against them.

If you’re working on traditional timber boards, the underlay helps prevent ridges and fractures wherever the lead rides over the edges.