DAFA DiFoil Airtight Membrane 50m x 1.5m

Slate Supplies (NI)

£133.64

DiFoil prevents rot, dry rot, and mold growth, primarily in exterior walls and ceiling structures. The vapor diffusion retarder allows condensation to pass periodically through the foil while sealing enough to stop normal vapor pressure. Use the vapor diffusion retarder for thermally insulated building elements where there is a risk of summer condensation or other moisture accumulation on the outer side of the vapor diffusion retarder. For example, well-insulated structures exposed to direct sunlight during summer can result in such significant inside/outside temperature differences that there

Slate Supplies (NI)'s own words, read from their page.

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Where this comes from

The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.

UK company
Registered at Companies House as SLATE SUPPLIES (NI) LTD, number NI058380. Checked 2026-08-29.
Means the business is a British legal entity, not a British-sounding name owned elsewhere. It says nothing about where anything is made.
UK operations
Not yet checked.
Means people employed here, or premises they actually work from. We keep this separate from the company badge because a registered office can be an accountant's spare room, and a company can be registered in Britain while everything it does happens somewhere else. Where we have not looked, we say so rather than assuming.
British-owned
Not established. Many companies file a statement rather than naming a controlling shareholder.
Read from the register of people with significant control, following the chain of holding companies. It does not gate anything: a firm can be made here and owned elsewhere, and that is worth telling you rather than hiding.
Where it is made
The maker doesn't say, so neither do we.
This is about the individual product, not the company. A British firm can sell things made abroad, which is normal and not a criticism. We would rather tell you which is which than average them into a score.

DAFA DiFoil Airtight Membrane 50m x 1.5m

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