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Mathew Rees
Silicone Render System Ltd is a plastering company based in Porthcawl, with over 20 years’ experience in the plastering trade. W...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in CF36 it ranges from £4,280 (Silicone Rendering Systems Ltd based in CF36) to £4,280 (Silicone Rendering Systems Ltd based in CF36).
Comparing extension builders estimates for fitting an RSJ gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
Get rates and quotes to install an RSJ in CF36 by posting a job with HaMuch and we will send it to extension builders in CF36.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Porthcawl | £33 | £252 |
| Install An RSJ near Pyle | £34 | £262 |
| Install An RSJ near Bridgend | £32 | £200 |
| Install An RSJ near Port Talbot | £31 | £227 |
| Install An RSJ near Maesteg | £38 | £283 |
| Install An RSJ near Vale of Glamorgan | £29 | £217 |
| Install An RSJ near Neath | £30 | £225 |
| Install An RSJ near Swansea | £29 | £229 |
| Install An RSJ near Neath Port Talbot | £31 | £224 |
| Install An RSJ near Rhondda | £31 | £206 |
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Underpin a building - £19,580

Two storey extension - £91,120

Build a timber frame extension - £28,080

Build a swimming pool - £83,080

Single storey extension - £96,600

Side return extension - £64,900

Install an RSJ - £4,280

Outbuilding - £12,080

Build a Mansard loft conversion - £54,080

Loft conversion - £53,250

Build a kitchen extension - £44,080

Hip to gable loft conversion - £44,080

Granny annexe - £89,080

Garden office - £12,080

Convert a Garage - £18,080

Garage - £20,580

Build a flat roof extension - £24,080

Build a dormer loft conversion - £44,080

Concrete foundations - £8,330

Convert a bungalow loft - £31,080

Convert a basement - £60,900