Graphical Construction Glossary >> Roofs and roofing. >> Roof Features >> Flashing

A strip of sleeve of impervious material, or a non-ferrous metal or coated steel material that is formed to stop the entry of water.
Hip-flashing (PM)
The PM-flashing of a hip over a roof sheeted with roll formed steel roofing.
"Pressed metal" material usually 0.9mm thick in the same finish as the roofing. It is cut to length and width in a guillotine and then shaped in a brake press. The lengths of the individual flashings are governed by the size of the machine available. 6M. is common.
Any type of flashing that seals an object that passes through a roof. In particular now associated with proprietary fittings to suit various circular holes in roofs. i.e. vent pipes or extractor pipes.

a pressed metal hip flashing

A typical pressed metal (PM) hip-flashing formed out of the same material the the corrugated sheets are and with fixings of the same colour. More on these flashings.

various pm flashings

More PM-flashings in the natural Galvalume colour. You can maybe pick out the ridge cap, a large valley gutter and a traditional style rolled edge verge capping, along with a few trims around the corrugated wall cladding.

a small penetration flashing.

A very small penetration fitting for sealing around circular roof penetration. These use a combination of EPDM rubber and a soft fairly malleable alloy. This one is on a flat surface, but they can be moulded around various roof profiles.

The are available in various sizes and there are ones that can be retro-fit. That is they can be fitted around existing stack pipes without having to slip them over the top of the pipe.

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