Westdene construction mastic
Mastic packages for new-build and refurbishment projects in Westdene and across Brighton and Hove. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.
- Bath and shower joints scraped during the final clean
- Mastic snags holding up handover
- Missed perimeter joints on a new elevation
Construction mastic for businesses in Westdene
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Your questions answered
Is Goldstone Retail Park, near Westdene, within your area?
Yes. Estates, retail parks and business parks around Westdene, Goldstone Retail Park among them, are all within reach. Photos and a short description are enough for a first look.
Is Westdene too far out for you?
Not at all. Westdene is within our area. We work across Greater London and the South East. We plan jobs in smaller places so return trips are kept to a minimum.
What site paperwork can you supply?
Let us know which documents the site needs, such as RAMS, an insurance certificate or CSCS details, and we will confirm them with the quote.
Do you do internal caulk as well as external mastic?
Window and door perimeters, internal decorators’ caulk where specified, sanitary joints, kitchens, movement joints and snagging. The scope follows your specification.
Can you seal external joints in wet or cold weather?
Outside, the joint has to be dry and the temperature within the product’s limits. Damp, frost or condensation on frames can stop work so we usually switch to internal work when that happens.
What if there’s asbestos in the old mastic?
Asbestos is possible in some older mastics, particularly in buildings from before 2000. We check the asbestos register before cutting out old sealant in an older building, and work stops until any suspect material has been tested. Removing asbestos is a job for asbestos specialists, not us.
Do you seal on top of existing sealant?
No. Failed sealant is removed and the faces cleaned back to sound, dry material first, since fresh sealant will not bond reliably to aged material.
Construction mastic in Westdene, done properly
A typical mastic package covers more than window perimeters: external door and window perimeters, internal decorators’ caulk where specified, sanitary joints in bathrooms and washrooms, kitchen worktops and splashbacks, and snagging before handover. One contractor for all of it keeps the responsibility in one place. Most enquiries involve bath and shower joints scraped during the final clean and oversized or tapered gaps around new frames, across internal decorators’ caulk, window and door perimeters and brick and block movement joints. Whoever orders the work in Westdene, the brief is usually the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Around places like Westdene, a lot of construction is the conversion of older buildings, and the sealant at those junctions has to cope with two materials that move differently.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Where
- Westdene (BN1, BN3)
- Region
- Brighton and Hove
- Cover
- 12 months on our workmanship
- Quotes
- A fixed quote before we start
- Call
- 01277 525 020
- Last updated
- 3 November 2026
What we can’t put right
Not every problem is a sealant problem, and we’re upfront when that’s the case. These need a different solution:
- Oversized gaps that need packing or adjustment by others
- Faulty frames rather than failed sealant
- Approving fire stopping as compliant
If you’re not sure, just call 01277 525 020 or email a schedule or drawings and we’ll give you a straight answer.
Surfaces we seal
- Brick and block movement joints
- Internal decorators’ caulk
- Window and door perimeters
- Floor and skirting junctions
- Sanitary and kitchen joints
- Cladding and panel joints
From enquiry to sign-off
We begin with a short walk round with whoever looks after the building, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. Work in places the size of Westdene is planned as a single visit where we can. Photos with rough sizes let us arrive with everything needed.
- We walk the site or review drawings to understand the package.
- A fixed quote sets out scope, products and phasing.
- Paperwork is agreed and applicators are inducted on site.
- We seal plot by plot or floor by floor in line with the programme.
- Problems we find, such as oversized gaps, are raised right away.
- The package is closed out, snags cleared and backed by our 12-month guarantee.
Before we start on site
- Agree which areas must stay open
- Tell staff and tenants when we will be in
- Confirm the product named in the specification
Getting a fixed quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to call 01277 525 020 or email us with what you know.
Read more
Why it’s worth doing now in Westdene
Refurbishments sometimes budget for new windows when the frames are sound and only the seal has failed. Sound frames often need only a new perimeter seal and that’s a far smaller job. We’ll say so if a frame itself is the problem. Over time, UV, weather and movement wear any sealant out. Renewing it in good time keeps the building weathertight.
A quote for mastic packages depends on how many there are, their condition and the access. Ask us for a fixed quote.
Why clients in Westdene choose us
- RAL and finish matching where the product range allows
- A range of standard colours, depending on the product
- Fixed quotes based on photographs, drawings or a visit
- Products installed to the manufacturer’s instructions
See our cost guide or how we’re accredited.
How the job changes by surface
Window and door perimeters
Inside, a paintable sealant or decorators’ caulk is used where the joint doesn’t move much. We follow what’s specified.
Snagging before handover
Snags usually come from damage by following trades, missed joints or poor earlier work. Snagging can be included or priced separately.
Construction mastic around Westdene: what changes locally
With the shore within about 3 miles, Westdene counts as a coastal location. On a coastal site, facade and perimeter joints face driven rain and, closer to the beach, salt, and the sealant, primer and backing need choosing with that in mind. The South East is one of the drier 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.
For a contractor working at a hospital such as Mill View Hospital (1.7 miles south-west of Westdene), perimeter and facade sealing is planned around patients and deliveries. Units on estates such as Goldstone Retail Park, 1.6 miles to the south of Westdene, tend to be reclad and refitted as tenants change, and each job leaves cladding and perimeter joints to seal. Hotels like Preston Park Hotel (to the south-east of Westdene) rarely close for long, so refurbishment mastic is phased floor by floor.
Westdene is about 2 miles north-east of Brighton and Hove, in Brighton and Hove. Westdene sits inside our coverage, with the same fixed quotes and 12-month guarantee as everywhere else. We work across 29 places in Brighton and Hove.
Anyone looking for construction mastic in BN1 and BN3 gets the same process as the rest of our area: details, then a fixed price, then sealing and a 12-month guarantee. Buildings on Mill Road, Croft Road and London Road are within our area for mastic packages. Westdene sits on or close to the A27. Close to Westdene, our area also takes in Patcham (1 mile north-east), Withdean (1 mile south-east), Waterhall (1 mile north), Preston (1 mile south-east) and West Blatchington (1 mile south-west). Further afield, our area takes in Carlton Hill (3 miles south-east), Hanover (3 miles south-east), Portslade (3 miles south-west), Kemptown (3 miles south-east), Whitehawk (3 miles south-east) and Bevendean (3 miles south-east).
Near you in Westdene
We work on buildings around Varndean College, Withdean and Westdene Woods and The Sportsman pub and the streets around them. For rail, the closest station is Preston Park station, about 1 mile south of the centre. Nearby you will also find Clayton Castle (3.5 miles north) and British Engineerium (1.2 miles south-west). Not far away are Ladies Mile and Wolstonbury Hill.
Keeping the joints sound
After handover, these steps help:
- Keep scrapers and abrasive pads off new beads
- Stick to the specified sealant rather than a generic substitute
- Brief following trades on areas that have been sealed
- Release areas for mastic once other trades have finished in them
After we have sealed an area, it helps to keep other trades from damaging the joints. New beads should be left to cure before cleaning or decorating nearby, and that time depends on the product, temperature and joint depth.
In wet areas, a weak sanitary joint shows up quickly once the building is occupied. Water gets behind trays, vanity tops and panels. Proper preparation, with the right silicone first time, keeps it off the defects list.
General trades versus a specialist
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are easy to get wrong without experience.
Putting right a botched joint often costs more than sealing it well at the start, because the whole bead must be removed and the faces cleaned back again. For that reason, many FMs and contractors use a sealant specialist from the outset.