Extensions & New Build Plastering
Extension & New Build Plastering in Romford
Building an extension or converting your loft? AJ Plast provides full shell-to-finish plastering — from first-fix plasterboarding right through to the final smooth skim — for new builds and extensions across Romford, Havering, and the surrounding areas.
Our New Build & Extension Services
- Plasterboarding — walls and ceilings boarded to a high standard, including insulated boards where specified by your build design.
- Taping and jointing — seams properly reinforced with mesh tape before skimming, to reduce the risk of future cracking along joints as the building settles.
- Full skim finish — smooth, paint-ready walls and ceilings throughout the new space.
- Working around structural features — skylights, exposed beams, vaulted ceilings, and large glazed openings that require extra care to get sharp, consistent lines.
- External rendering — matching new extension render to the existing property finish, where required, so the addition doesn't stand out.
Why Extension Plastering Needs an Experienced Team
Extensions often bring tricky angles that a standard flat-wall plasterer isn't used to handling — vaulted ceilings, skylight surrounds, box gutters, sloped loft ceilings, and structural beam work. Getting sharp, clean lines around these features takes genuine experience. It's the difference between an extension that looks like it was always part of the house, and one that visibly looks bolted on once the light catches an uneven junction or a wavy line around a window.
We've completed extension plastering work involving multiple skylights, vaulted ceilings, and complex angled wall junctions — the kind of detailed work that separates a competent job from a genuinely good one. These are often the areas that get noticed first if done poorly, and noticed least (which is the goal) if done properly.
Our Proces
Site visit and quote
we look at the build stage and scope out the full job before pricing
First-fix boarding
all walls and ceilings boarded, including any bulkheads, box-outs, or feature areas
Taping, jointing and scrimming
joints properly reinforced to prevent future cracking
Skimming
full smooth finish applied throughout, carefully worked around windows, skylights, and vents
Exterior renderin
(if required) — matched to the
existing property finish
Final walkthrough
checked under good lighting before handover, so you're not the one spotting flaws after we've gone and moved on to the next job
Working With Builders & Homeowners
We regularly work directly alongside builders on extension projects, fitting reliably into the build schedule — and just as often work directly with homeowners project-managing their own build. Either way, clear communication and turning up on time matters, because delays on a build affect every trade that comes after us, from decorators to flooring fitters waiting on a finished, dry surface.
Extension & Loft Plastering Across Romford & Havering
We've completed extension and loft conversion plastering across Romford and Havering, including work involving skylights and vaulted ceilings.
FAQs
Can you plaster a loft conversion with sloped ceilings and skylights?
Yes — this is a regular part of our extension and loft conversion work, including working cleanly around Velux-style roof windows and the angled junctions they create.
Do you work directly with builders, or only with homeowners?
Both. We're happy to be booked in as a subcontractor
by your builder, or booked directly by you as the
homeowner.
How soon after boarding can you skim?
Boards need to be taped and jointed first, followed by a short drying period, before skimming begins. We factor this into your build timeline when quoting.
Can you match new extension render to our existing house?
Yes — matching texture and colour to blend the new render with your existing property is something we do regularly.
Do you provide quotes based on architect's plans before the build starts?
Yes, we're happy to provide an estimate from plans, though we'll usually want to confirm the final price once the shell is up and we can see the actual space.
How long does a typical extension take to plaster?
It depends on size and complexity, but most singleroom extensions take a few days for boarding and skimming, plus drying time between stages.
What happens if the build schedule changes and our start date shifts?
We understand build schedules move — just keep us updated and we'll do our best to accommodate a revised date.
Do you handle plastering around underfloor heating manifolds or other services boxed into the walls?
Yes, we regularly plaster around boxed-in services as part of extension work — just flag anything unusual when we quote.