Find a builder to make your building structurally sound

RSJs support your new extension or other construction to ensure that your property is structurally sound. They are crucial parts of your building work that mustn't be ignored, and must be installed by a professional.  To see prices and availability for your job click Get quotes.

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Install an RSJ cost in Slough - Sort by rates or availability

From £2,424

Last active Oct 26
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A South View

Experienced extension builder ready to quote for your work. A South View is the best extension builder in Slough. No obligation free quotes and man...

From £2,264

Last active Oct 26
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MRE Maintenance Services

MRE Maintenance Services is an established and experienced local extension builder in Slough. Please contact us for a free, no obligation quote and...

From £2,232

Last active Oct 26
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BeautifulRenovation

Location

Slough, SL1

BeautifulRenovation are here to help customers who need an Extension Builder in Slough. We offer a competitive rate to complete all your extension ...

From £2,248

Last active Oct 26
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Sherry Construction

Experienced extension builder ready to quote for your work. Sherry Construction is the best extension builder in Slough. No obligation free quotes ...

From £2,192

Last active Oct 26
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EIC Builders Ltd

EIC Builders Ltd are here to help customers who need an Extension Builder in Slough. We offer a competitive rate to complete all your extension bui...

From £2,344

Last active Oct 26
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BDR Home Improvement

BDR Home Improvement are here to help customers who need an Extension Builder in Slough. We offer a competitive rate to complete all your extension...

From £2,152

Last active Oct 26
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Dub Solutions

Dub Solutions is a trusted extension builder serving customers in Slough and the surrounding area. Contact us to today to get a competitive quote f...

From £1,880

Last active Oct 26
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Lp Townsend Brickwork

Lee Townsend

Need to find an Extension Builder near you for all your extension buildering work?

Lp Townsend Brickwork provides a local, trusted extensio...

From £2,288

Last active Oct 26
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B.A Ruffle Building Contractor

B.A Ruffle Building Contractor is an established extension buildering business in Slough. We come highly recommended and provide competitive quotes...

From £2,584

Last active Oct 26
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HAMPTON CONSTRUCTION LTD

HAMPTON CONSTRUCTION LTD are here to help customers who need an Extension Builder in Slough. We offer a competitive rate to complete all your exten...

RSJ cost in Slough

Estimates for install an rsj near Slough

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Slough it ranges from £1,880 (Lp Townsend Brickwork based in SL2) to £2,584 (HAMPTON CONSTRUCTION LTD based in SL2).

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 Slough by posting a job with HaMuch and we will send it to extension builders in Slough.

"RSJ installation" - SLOUGH, job posted 05/07/25


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Estimates for common extension builder jobs in Slough;

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.

More extensions & conversions cost guides...