homediy

You need three hinges and the top and bottom one fairly close to the edges to avoid warping of the door in a fire. Guess what - the third one goes smack on in the middle!

No risk of fine! The Dorgard is the perfect solution when you are retrofitting fire door retainers (go for electromagnetic fire door retainers when you are building from new and have a fire alarm panel). And totally legal (certified to BS EN 1155) for most applications and certainly the one you described. Only exceptions are fire doors leading to stair cases and to high risk areas such as kitchens and boiler rooms.

Yes, of course, the whole point of the collar is that it stops the fire coming through by expanding. In actual fact having it BELOW the ceiling would be no good, as the intumescent would be able to escape elsewhere!

Common problem, yes - mothers You need a gas detector with shut off valve. Make sure you search for gas detectors for natural gas or LPG (depending from what your mother uses). Sometimes people get confused with carbon monoxide issue! Not related at all. CO (carbon monoxide) is the problem AFTER gas is burned. The explosion in your mum's kitchen is the problem BEFORE the gas is being burned! Look for AMS S/2 LPG and Natural Gas Alarm. Then link a gas shut-off valve to it. Cheers