Construction Mastic in Longcross
Mastic packages for new-build and refurbishment projects in Longcross and across Surrey. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Oversized or tapered gaps around new frames
- New external sealant already peeling away
- Sanitary sealant damaged by following trades
Construction mastic in Longcross
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How we handle construction mastic in Longcross
A typical mastic package covers more than window perimeters: frame perimeters inside and out, caulking to trims and boards where the specification calls for it, sanitary silicone, kitchens, and the final snag list. Splitting those between trades often leaves gaps in responsibility and gives you a consistent finish across the job. The enquiries we see most involve failed sealant in an existing building being refurbished and early adhesion failures on new external joints, across floor and skirting junctions, brick and block movement joints and sanitary and kitchen joints. Whoever orders the work in Longcross, the brief is usually the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Around smaller places like Longcross, building work normally means conversions of farm buildings, a few new houses or an extension to a hall or school. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.
Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.
- Location
- Longcross (KT16)
- Region
- Surrey
- Cover
- 12 months on our workmanship
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Construction mastic in Longcross: the local picture
Longcross lies roughly 23 miles out from central London. Construction around the commuter belt mixes station-side flats with refurbished offices and units, and each scheme needs its mastic sealed to programme. Rainfall across the South East, Longcross included, is lower than in many parts of the UK. Still, external mastic needs dry faces within the maker’s temperature limits, which isn’t every day, so we time external mastic for dry faces and agree it with the site team.
New wings at hospitals like St Peter's Hospital (2.6 miles east of Longcross) bring long runs of window and panel joints to seal. When units on a site such as Hersham Farm Business Park (to the east of Longcross) are refurbished or reclad, the panel joints and window perimeters are part of the mastic package. Older buildings in the area around Longcross, such as Botleys Mansion, 2.3 miles to the east of Longcross, need care when sealed: the product has to suit soft or historic materials.
Longcross is about 4 miles south-west of Egham, in Surrey. Businesses, contractors and managing agents in Longcross can call on us for mastic packages. Longcross is one of 379 places in Surrey on our list for mastic packages. There’s a separate page for Reading, about 18 miles away.
We take on mastic packages across the KT16 postcode area, whatever the building. Streets here include Longcross Road, Tanglewood Close and Albury Close. Sites close to Longcross are covered too, including Trumps Green (1 mile north-east), Stonehill (1 mile south-east), Lyne (2 miles east), Mimbridge (3 miles south) and Ottershaw (3 miles south-east). Bigger towns within reach include Guildford (9 miles south), Woking (4 miles south), Camberley (7 miles south-west), Epsom (14 miles east), Farnham (15 miles south-west) and Ewell (14 miles east).
What’s near Longcross
Around Longcross, our work takes us to commercial buildings near Gracious Pond. The nearest railway station is Longcross station, about 0.6 miles north-west of the centre. Well-known places in the area include St. Peter's Hospital (2.6 miles east) and Chobham Museum (2.2 miles south). Not far away are Virginia Water Lake and St Ann's Hill.
Honest limits
Part of a good diagnosis is knowing where sealant stops. We will tell you if the real problem is one of these:
- Designing joint widths or choosing the specification (that sits with the designer)
- Deciding which fire-stopping product a penetration needs
- Damage to finishes by other trades after we’ve sealed
If in doubt, give us a call on 01277 525 020 or email drawings and photos and we will say what we think before you book.
Where we work in Longcross
- Internal decorators’ caulk
- Window and door perimeters
- Sanitary and kitchen joints
- Cladding and panel joints
- Floor and skirting junctions
- Brick and block movement joints
Common questions from Longcross clients
Can you work around term dates at a campus such as Imperial College Silwood Park Campus?
Yes. Education sites typically want the work in vacations or in phases during term, and we plan to suit. Let us know which documents your site asks for, and we will confirm them alongside the quote.
Do you take on work at healthcare sites like St Peter's Hospital?
Yes. We work in healthcare settings as well as offices and schools. Work is phased so departments keep running, under the site’s own rules.
Are you insured?
Yes. Our insurance certificate can be sent alongside the quote.
Can fire-rated sealing at service penetrations be included?
We install fire-rated sealant where it is the specified product. If the detail calls for collars, wraps or batts instead, we will tell you.
What about RAMS and site documents?
Each site asks for different documents, so tell us what you need and we will confirm it when we quote.
What do you charge?
We don’t publish prices, as every site differs. With photographs or drawings, we can give you a fixed quote.
Will you quote for a small job?
Whatever the size, the process is the same: details, then a fixed price, then sealing, then a 12-month guarantee.
Why act early in Longcross
Leaving mastic to whichever trade is fitting the element can look cheaper on paper. In practice it often means different standards, gaps in responsibility and snags nobody owns. A single mastic package gives one point of responsibility, with the same standard on every plot. Halls, stores and units around places like Longcross may not be checked every day, which gives a failed joint time to do damage. Resealing early avoids that.
Small jobs and large programmes are priced from the same things: what’s in scope, how we reach it, what’s specified and when it needs doing. Call for a quote and we will put a fixed figure on it.
Why clients in Longcross choose us
- Fixed quotes based on photos, drawings or a visit
- Over 20 years of commercial sealing
- Old sealant cut out, never sealed over
- Colour options checked against the specified product
Take a look at how commercial sealant jobs are priced and how we’re accredited.
Doing it in-house
What you see is the finished bead, but most of the work is hidden. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Also in Longcross
How the job changes by surface
Bathrooms, en suites and washrooms
In bathrooms and washrooms, an anti-mould sanitary silicone goes around every fitting. Joints are cleaned, sealed and tooled neatly, and any bath is loaded with water first where that’s the agreed method.
Internal decorators’ caulk
Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s for gaps that stay still and get painted.
What affects the price in Longcross
These are the things that shape the price:
- Joint width, depth and condition
- How much there is to seal
- Phasing around occupants
- Access and working height
The product called for affects the cost, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Sending details for a quote
It doesn’t need to be a full survey. A few details are enough to get going:
- Specification clauses that apply
- Photos of the joints, close up and from further back
- When you need the work done
- Anything awkward about access or site hours
Send us photos, drawings or a joint schedule and a fixed quote comes back to you. Where a site visit makes more sense, we will arrange one.
Our process
Before any cutting starts, the area is protected: masking tape along the joint edges and sheeting over anything nearby. The work itself normally takes a day or two on a small fit-out and several weeks on a large multi-storey package, and we clear our waste as we work. If others near Longcross need work, visits can be combined. You’ll have a fixed quote before work starts.
- First we look at the scope on site or from drawings.
- You receive a fixed quote covering scope, products and sequence.
- Site paperwork is confirmed and our CSCS-carded applicators are inducted.
- We seal plot by plot or floor by floor in line with the programme.
- Any frame gaps or issues outside our scope are flagged to the site team.
- The package is closed out, snags cleared and backed by our 12-month guarantee.
Getting the site ready
- Move anything stored against the joints
- Point out any areas we must not close
- Confirm the product named in the specification
Getting a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price against exactly what is specified. Smaller jobs need nothing more than photos and a few notes.