Manthorpe GRS Radiator Pipe Guide and Seal

The Manthorpe GRS Radiator Pipe Guide and Seal addresses one of those gaps in the building process that everyone quietly ignores until a pressure test fails. Where radiator pipes pass through a wall, there is almost always an unsealed gap. Air moves freely through it, heat disappears, and the householder ends up wondering why their bills are higher than expected. The GRS fits at that junction and closes it off with an airtight TPE gasket, giving you a clean, compliant finish that holds up to scrutiny.

It is designed specifically for plastic pipework, which has become the standard choice on most domestic heating installs. The 80mm radius pipe guide does the practical work of bringing the pipe round to the radiator without kinking or sagging, both of which cause longer-term problems behind plasterboard or skim. The built-in skim bead gives the plasterer a clean line to work up to, so there is no guesswork about where to finish. Four fixing points hold the whole assembly firmly in place, and the clamps grip the pipework to stop it moving or chafing against the wall edge over time.

How the Manthorpe GRS Helps with Part L Compliance

Part L of the Building Regulations now requires air pressure testing on new builds and major refurbishments. Radiator pipe penetrations are one of the common failure points, and one that is easy to overlook when you are focused on loft hatches and window seals. The Manthorpe GRS deals with it at the point of installation rather than as a remedial fix after the test. At under a fiver, it is one of the more cost-effective ways to tick a compliance box. Fit it during first fix, plaster up to the bead, and the job is done properly first time.