Mastic sealant contractors in Brunswick
Mastic sealing for building owners, managing agents and housing associations in Brunswick. CHAS accredited and fully insured, with a 12-month guarantee.
- Movement joints with sealant missing
- Brittle perimeter mastic across a building
- Old repairs sealed over failed mastic
Mastic sealing in Brunswick
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
About our mastic sealing in Brunswick
There isn’t one mastic for every joint on a building. Low-modulus neutral-cure silicone suits many window perimeters and external movement joints, while hybrid polymer sealants grip many materials and are often paintable, and colours are confirmed for whichever product is used. We work on external wall and movement joints, communal kitchens and washrooms and balcony and threshold joints, and the failures we’re asked to look at most are brittle perimeter mastic across a building and the same joint failures repeated across a portfolio. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Brunswick it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Converted and older buildings in and around Brunswick often put modern windows into old walls. The mastic there needs to suit both surfaces.
Every job we finish is backed by a 12-month workmanship guarantee. If our installation lets you down in that time, we return and fix it.
- Location
- Brunswick (BN1, BN3, BN50)
- Region
- Brighton and Hove
- Guarantee
- A 12-month guarantee
- Price
- Quoted before any work starts
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Your questions answered
Is Brunswick too far out for you?
Not at all. Brunswick is within our area. We work across Greater London and the South East. Where we can, we group nearby jobs to make the most of each trip.
Can work in a care setting near Brunswick go ahead while residents are there?
Yes. We agree rooms and times with the manager and work a few areas at a time. We follow the home’s own procedures throughout.
Will you just go over the old 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.
Can you plan resealing across several buildings?
Block-wide and estate programmes are common. You get a fixed quote per building or for the whole job.
Is asbestos a concern with old mastic?
Asbestos removal isn’t part of our work. If old sealant is suspected, work stops until it’s tested in line with the dutyholder’s asbestos management.
Which sealant will you use?
Where there’s a specification, we use the product it names. If not, we choose for the movement, the surfaces and the conditions, in line with the manufacturer’s guidance.
Do you supply RAMS and insurance details?
Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote. We are CHAS accredited and a Constructionline member.
What we are called out for in Brunswick
We often find joints filled solid with no backing rod so the mastic is bonded on three sides. It can’t stretch properly and it tears.
Clients normally get in touch after noticing one or more of the following:
- Leaks at window and door perimeters
- The same joint failures repeated across a portfolio
- Patchy repairs in mismatched sealant
- Brittle perimeter mastic across a building
Student blocks close to universities like University of Brighton Moulesecoomb Campus, 2 miles to the north-east of Brunswick, are easiest to work on between tenancies.
Questions to ask before you book
- Their approach to joint depth and backing
- Will CSCS-carded applicators be on site?
- Their public liability cover
- What the guarantee covers, and for how long
Places near Brunswick
More services for Brunswick
Mastic sealing around Brunswick: points for this area
Brunswick is within about 1 mile of the coast. Blocks and commercial buildings facing the sea take the most weather on their window perimeters and external joints, and they deserve more regular inspection. The South East is one of the drier parts of the UK. Outside mastic still needs a dry joint and the right temperature, while the elevations that take the most sun tend to show hardened mastic first.
Buildings close to stations like Brighton station (to the north-east of Brunswick) are often flats over shops, with frame mastic to keep sound. For a school such as St Mary Magdalen Catholic Primary School, perimeter mastic on windows and doors is a holiday job.
Brunswick is about 1 mile south-west of Brighton, in Brighton and Hove. If you are looking for mastic sealing in Brunswick, we can help. We work across 29 places in Brighton and Hove, large and small.
We cover the BN1, BN3 and BN50 postcode districts. Streets here include Farm Road, York Road and Powis Road. If your building is just outside Brunswick, we cover Seven Dials (1 mile north-east), West Hill (1 mile north-east), Prestonville (1 mile north), Hove (1 mile north-west) and Carlton Hill (1 mile east). Bigger towns within reach include Portslade (3 miles north-west), Hangleton (3 miles north-west), Patcham (3 miles north), Hollingbury (3 miles north), Bevendean (3 miles north-east) and Saltdean (5 miles east).
What’s near Brunswick
Recent enquiries here include premises near St. Ann's Well Gardens, Maris & Otter pub and The Drive Prep School, among other places. The nearest railway station is Brighton station, about 0.6 miles north-east. Well-known places in the area include Old Police Cells Museum (0.7 miles south-east) and Churchill Square (under half a mile east). Open spaces near Brunswick include Whitehawk Hill and Newmarket Hill.
On site: what to expect
Our CSCS-carded applicators arrive with the sealants, primers and backing rod the job calls for. Joint faces are cleaned back to sound, dry surfaces, the manufacturer’s primer is applied where it’s called for, and the sealant is tooled off neatly. Work in places the size of Brunswick is planned as a single visit where we can. Photos with rough sizes let us arrive with everything needed.
- We check the asbestos register for older buildings and look at the joints.
- A fixed quote covers the joints, products and order of work.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- Buildings are completed in turn.
Preparing the site
- Confirm the product named in the specification
- Share the asbestos register for older buildings
- Tell staff and tenants when we’ll be in
Get a fixed quote
The quickest route to a quote is a few photographs and the site postcode. Send them through the quote form, or ring 01277 525 020 or use the quote form if you’d rather talk the job through.
Related advice
Surface by surface
Commercial and mixed-use buildings
Landlords with commercial portfolios have shopfronts, office entrances and external joints to look after. We work across portfolios on a planned basis.
Estate-wide resealing programmes
Housing associations and agents often manage many similar blocks. Each block is priced and scheduled in order.
Cost factors for mastic joints
The price varies from site to site. Expect it to depend on:
- How much existing material needs removing
- The total length or number of joints
- Any access equipment needed
- Joint width, depth and condition
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.
What we need to price the job
Whether it’s one area or a whole building, these details speed things up:
- Whether an asbestos survey exists
- Photos of the joints, close up and from further back
- Anything awkward about access or site hours
- Your programme or deadline
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, call 01277 525 020 or send details through our quote form.
Maintenance after handover
Every sealant joint needs some looking after, and their life depends on movement, exposure, cleaning and use. We suggest:
- Keep bins and bikes away from communal door frames
- Mention RAMS, insurance or CSCS requirements up front
- Check sealant joints during planned building inspections
- Prioritise elevations facing the weather
Protect entrance and corridor joints from knocks where possible. Knocks cause many early failures in communal areas.
One failed perimeter usually means others on the same building are close so a single failure is a sign to check the rest. A planned reseal saves repeated visits.
When it isn’t the sealant
Our job is the joint, not everything around it. On its own, sealant can’t deal with:
- Leaks through the frame itself rather than the perimeter
- Materials that need asbestos testing before work
- Misted or failed double-glazed units
If in doubt, ring 01277 525 020 or use the quote form and we will say what we think before you book.
Surfaces we seal
- Communal kitchens and washrooms
- Shopfronts below residential blocks
- Balcony and threshold joints
- Communal entrances and stairwells
- External wall and movement joints
- Window and door perimeters on blocks