Mastic Sealing in Portslade
Mastic sealing in Portslade, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Mastic failing across several blocks on an estate
- Failed external movement joints
- A mix of products and colours from past repairs
Mastic sealing across Portslade
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Questions about Portslade
Can you quote for a block close to Fishersgate station?
Yes, and several blocks can go on one quote. Photos of each elevation help us quote accurately.
Can being near the sea in Portslade affect the sealant we need?
It can. Driven rain and salt are tougher on outside sealant than sheltered inland conditions. We check the specified product suits the exposure and pay close attention to preparation.
How long do sealant joints last?
There isn’t a single answer, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.
Is Portslade in your area?
Yes. We take on work across Portslade.
Can people stay in the building while you reseal?
The work is planned around occupiers. Dates and areas are agreed with you so residents or tenants can be told and communal access is kept open.
What about access for upper-floor joints?
Every block is different. We agree access with you at quote stage so there are no surprises.
Who decides which product is used?
The specification comes first, if there is one. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.
About our mastic sealing in Portslade
For blocks and buildings in Portslade and across Brighton and Hove, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. A list of buildings, a few photos and approximate joint numbers are enough for a quick quote, and site visits can be arranged. The enquiries we see most involve communal area joints that look neglected and no planned programme for sealant, on window and door perimeters on blocks, external wall and movement joints and communal entrances and stairwells. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, in Portslade it comes down to the same thing: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Places the size of Portslade normally have some housing association stock, small blocks and mixed-use buildings. Their window perimeters and external joints need renewing as the mastic ages.
Whoever the client is, the cover is the same: twelve months on the work we carried out. Faults in the structure, damage and other trades’ work fall outside it, and we say so plainly.
- Place
- Portslade (BN41, BN3, BN42)
- Wider area
- Brighton and Hove
- Cover
- 12 months on our workmanship
- Price
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
From enquiry to sign-off
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. The work itself usually takes a few days for most blocks, with larger programmes scheduled building by building, and we clear our waste as we work. Work in places the size of Portslade is planned as a single visit where we can. Clear photographs and measurements help us bring the right products.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- Each building is checked and signed off with the 12-month guarantee.
Getting the site ready
- Tell us which areas need to stay in use
- Send your site hours and access windows
- Make sure the joints can be reached
Quotes
Every job follows the same four steps: send details, get a quote, we seal, guaranteed. To take the first step, ring 01277 525 020 or send details through our quote form.
Read more
When something else is needed
Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:
- Leaks through the frame itself rather than the perimeter
- Water coming in from the roof or rainwater goods
- Asbestos-containing sealant, which we don’t remove
If in doubt, call the office on 01277 525 020 or send details through our quote form and we will say what we think before you book.
Surfaces we seal
- Communal kitchens and washrooms
- Shopfronts below residential blocks
- Window and door perimeters on blocks
- Balcony and threshold joints
- External wall and movement joints
- Communal entrances and stairwells
Planned mastic for Portslade portfolios
Portslade is within about 1 mile of the coast. On buildings near the shore, the side facing the weather usually needs its mastic renewed first; plan inspections around that. Portslade is in the South East, one of the UK’s drier regions. 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 Fishersgate station, 0.7 miles to the south of Portslade, are often flats over shops, with frame mastic to keep sound. Student blocks close to universities like University of Brighton Moulesecoomb Campus (4.2 miles east of Portslade) are easiest to work on between tenancies.
Portslade is about 1 mile west of Brighton and Hove, in Brighton and Hove. Businesses, contractors and managing agents in Portslade can call on us for mastic joints. Our Brighton and Hove coverage takes in 29 places, from busy centres to rural villages.
Business premises anywhere in BN41, BN3 and BN42 are within our area. If your site is on Mill Lane, Crown Road and Drove Road or close by, send details and we’ll quote for mastic joints. You will find Portslade on or near the A293, so getting applicators and materials to site is simple. We also cover Hangleton (1 mile north-east), Southwick (1 mile south-west), Kingston by Sea (1 mile west), Shoreham-by-Sea (2 miles west) and Old Shoreham (3 miles west). Nearby towns on our patch include Brighton (4 miles east), Carlton Hill (4 miles east), Hanover (4 miles east), West Hill (3 miles east), Brunswick (3 miles south-east) and Seven Dials (3 miles east).
Local landmarks in Portslade
Recent enquiries here include premises near The Mill House, King's School and Benfield Hill, among other places. The nearest railway station is Fishersgate station, roughly 0.7 miles south. Nearby you’ll also find Churchill Square (3.4 miles south-east) and British Engineerium (1.8 miles east). For a walk, there’s Thundersbarrow Hill and Shoreham Beach.
After the work
Regular inspection catches problems early. Specifically:
- Reduce knocks to communal area joints
- Include mastic in your cyclical inspections
- Log resealing dates block by block
- Group repairs into a planned programme
Protect entrance and corridor joints from knocks where possible. Knocks cause many early failures in communal areas.
Water getting in round frames can damage plaster, decoration and the frames themselves. Resealing early keeps the job small.
Also near Portslade
What else we do in Portslade
Common problems we fix in Portslade
Buildings move with temperature and moisture, and the sealant takes up that movement. If the joint or the product wasn’t suited to the movement, it splits and fails early.
Common reasons buildings call us in:
- A mix of products and colours from past repairs
- Open joints in brickwork or panels
- Brittle perimeter mastic across a building
- No planned programme for sealant
If your remit includes a building such as Peter Gladwin Primary School, frame and door mastic can be programmed for the holidays.
Before you book anyone
- What site paperwork they can supply
- Whether primer will be used where the manufacturer specifies it
- How joint depth will be controlled
- Their plan for phasing and protecting the area
Should maintenance staff do it?
The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist works through quantities efficiently, leaves a consistent finish and backs it with a 12-month guarantee.
Commercial clients in Portslade
Housing associations and managing agents often need work done across blocks and communal areas. Work can be phased so residents and staff keep access throughout, with each stage agreed with your site contact.
Hotels, schools, healthcare sites, offices and retail units come to us directly as well. We plan around the way the building is used, so the building keeps working while we do.