Roof Construction

High Quality Roof Construction in East Grinstead, Haywards Heath, West Sussex & Surrey

While some carpentry companies specialise in one specific type of roof construction, our versatility allows us to offer both main variations – truss and cutandpitch. On this page, we’ve looked to explain the key differences between these two types of roof construction. With over 30 years of experience erecting roofs for anyone from a commercial client in Haywards Heath or Horsham, to a homeowner in Reigate or Oxted – we have honed are skills to a fine art. We can handle roof construction for new build properties, extensions, refurbishments, conversions and everything in between. Check out our gallery to see some examples of our work.

If you wish to get a quotation on a new roof, call our East Grinstead office on (01342) 822750 or (07789) 434474. Our roofs come with guarantees on materials and labour, but their term depend on exactly what you’re investing in. Another way we set ourselves apart from competing carpentry companies operating in West Sussex and Surrey, is that we will revisit your property to check the roof construction has settled and is performing perfectly. There’s no extra charge for this, and it’s a standard part of our customer service policy, ensuring you have peace of mind.

Cut & Pitch Roof Construction

This type of roof primarily consists of rafters and joists. The joists stop the rafters and walls from spreading outward, while supporting the ceiling. The space between the wall plate and the ridge, what type of roof covering you opt for, and whether or not your roof construction incorporates purloins will determine how large the rafter timbers need to be. Also, where a client in Haywards Heath or Horsham wants a usable, open roof space – we’ll opt for larger rafters. If a client in Reigate or Oxted just needs a closed roof for a small extension, for example – we’ll usually opt for smaller rafters.

As with every aspect of what we do as East Grinstead, West Sussex and Surrey’s trusted local carpenter, our cut and pitch roof constructions are completely bespoke and tailored to your individual needs. While typically rafters are spaced 16in apart, this is dependent on how large the rafters and sections of batten are.

With cut and pitch roof construction rafters are nailed to a wall plate that sits at the top of every supporting wall. Theyfeature “birdsmouth joints”, which are small triangular cutouts that allow them to fit over the wall plate. The top of the rafter is nailed to the ridge board, and the wall plate timbers are joined via a half-lap joint.

Purlins provide extra support, running at right angles up toward the rafter. Struts are then put in place every few rafters, attaching to a joist above a supporting wall. Hangers, nailed between every few rafters and a joist,are usedto hold the ceiling up. Collars are also employed as an additional bind between rafters on each side of the roof.

Truss Roof Construction

While a cut and pitch roof is hand-crafted in a meticulous manner, bespoke to your needs, a truss roof instead uses factory-made frames which already feature a combination of joist, rafters and struts. Nowadays, they constitutebutt-jointedlengths of timber nailed together with plate fastenings.

When installing a truss roof construction on a property in Haywards Heath, Horsham, Reigate, Oxted or any other locale surrounding our East Grinstead base, a crane is needed to lift it on. This isn’t always convenient, and this is why the vast majority of clients find cut and pitch roof construction a preferable option.

Need a carpenter for any of the above services? Call A G Kerr Carpentry in East Grinstead on (01342) 822750 or (07789) 434474.

Our Services


  • Carpentry
  • Roof Construction
  • Bespoke joinery
  • Building renovations
  • House extensions
  • Loft conversions
  • Barn conversions
  • Timber and Oak frame buildings
  • Roof Trusses
  • Timber cladding
  • Fascias and soffits
  • Wooden windows
  • Porches
  • Bespoke furniture
  • Built-in and fitted furniture
  • Radiator covers
  • Staircase joinery
  • Kitchen planning and installation

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