Silicone Sealant and Sealant Gun

Mercia (Mercia Garden Products)

£9.99

Extend the life of your garden building by applying silicone around the windows to prevent water ingress. This silicone can be used internally and externally and creates a water tight barrier that prevents water leaking into the joints of your garden building. Sealing around the windows of your garden building helps to prevent wood rot but also helps to reduce draughts. The fast setting silicone is ideal for use on sheds, summerhouses, greenhouses and log cabins. The silicone will remain permanently flexible and contains a fungicide to prevent mould. For internal and external use - Contains a

Mercia (Mercia Garden Products)'s own words, read from their page.

Buy from Mercia (Mercia Garden Products)Price seen 2026-09-05. Affiliate link.

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 MERCIA GARDEN PRODUCTS LIMITED, number 00382248. 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
Stated by the company: "a team of dedicated and highly skilled craftspeople" Source.
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.