Mastic sealing for building owners and managing agents in Seven Dials, Brighton and Hove
Mastic sealing for Seven Dials, from a contractor working since 2005. Fully insured and CHAS accredited.
- Complaints coming in block by block
- Worn sealant at communal door frames
- Old repairs sealed over failed mastic
Need mastic sealing in Seven Dials?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle mastic sealing in Seven Dials
Mastic Doctor has sealed joints on commercial and residential blocks since 2005. Every applicator holds a CSCS card, and the work is backed by public liability insurance. Each building we complete carries a 12-month guarantee on our workmanship. If you’re dealing with repeated reactive repairs to the same buildings and movement joints with sealant missing, we can put it right. Most enquiries from Seven Dials start with one failed joint and grow into a wider look at the building: we look at the rest while we are there and tell you what we find.
In a smaller place such as Seven Dials, landlords and agents tend to look after small blocks, flats over shops, sheltered housing and commercial units. The mastic around their frames and external joints ages like anywhere else.
What our 12-month guarantee covers is the way we did the job: the preparation, the sealing and the tooling. It doesn’t extend to damage, other trades’ later work or movement the joint was never designed to take.
- Where
- Seven Dials (BN1, BN3, BN50)
- Region
- Brighton and Hove
- Guarantee
- A 12-month guarantee
- Quotes
- A fixed quote before we start
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Your questions answered
Do you work in occupied care homes around Seven Dials?
Yes. We agree rooms and times with the manager and work a few areas at a time. Tell us about any infection-control or safeguarding requirements and we’ll work to them.
Will you take on work at estates like Centenary Industrial Estate, close to Seven Dials?
Yes. Our area takes in Seven Dials and its surroundings, with estates and business parks such as Centenary Industrial Estate included. Photos and a short description are enough for a first look.
Does the weather affect the work?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
Is mastic sealing guaranteed?
Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.
When can the area be used after sealing?
That comes down to the sealant and the temperature. Some products skin over quickly but need longer to cure fully, and we confirm it before leaving site.
How long do sealant joints last?
Nobody can honestly give a figure in years, because life depends on how much the joint moves, how exposed it is and how it’s cleaned and used. Regular inspection is the best way to catch problems early.
Who decides which product is used?
Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
Honest limits
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Frames that are rotten, warped or broken
- Substrate edges that need repairing first
- Misted or failed double-glazed units
If you’re not sure, just give us a call on 01277 525 020 or email us and we will give you a straight answer before you book.
Where we work in Seven Dials
- Window and door perimeters on blocks
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- External wall and movement joints
- Communal entrances and stairwells
- Balcony and threshold joints
Keeping the joints sound
After handover, these steps help:
- Share the asbestos register when you send details
- Protect low-level joints in entrances
- Ask residents or tenants to report leaks and draughts early
- Avoid piecemeal callouts where you can
Keep records of when each building was resealed. It helps plan the next round and gives you a history.
The longer failed joints are left, the more likely the substrate edges break up. Once that happens, repairs come before resealing.
For managing agents and facilities managers
We take on planned maintenance as well as one-off repairs: resealing failed joints building by building, on a schedule that suits your budget. Sites in Seven Dials can sit alongside others in a wider programme across Brighton and Hove.
Main contractors use us as their sealant subcontractor, on new build and refurbishment alike. Programme, specification and site rules come first, with CSCS-carded applicators on site.
Frames, entrances and external joints in Seven Dials
With the shore within about 1 mile, Seven Dials counts as a coastal location. Blocks and commercial buildings facing the sea take the most weather on their window perimeters and external joints. The 2 miles around Seven Dials include five care or nursing homes. For owners and operators of care buildings, window perimeters and external joints are best renewed in planned phases around residents.
Student blocks close to universities like University of Brighton Moulesecoomb Campus (to the north-east of Seven Dials) are easiest to work on between tenancies. Historic properties like Royal Pavilion (to the south-east of Seven Dials) show the age of some local stock, where frame mastic must suit soft brick or stone. If you are responsible for a building such as St Luke's Church Prestonville, frame and door mastic needs the same attention as any other property.
Seven Dials is about 1 mile west of Brighton, in Brighton and Hove. We cover commercial sites throughout Seven Dials, whether it’s a single job or part of a planned programme. Across Brighton and Hove, 29 places are covered, including Seven Dials.
Commercial sites across BN1, BN3 and BN50 are covered. For a building on Dyke Road, Powis Road and York Avenue or nearby, send details and we’ll quote for mastic joints. Seven Dials sits on or close to the A2010, useful when we plan access and materials. Close to Seven Dials, our area also takes in West Hill (1 mile south-east), Prestonville (1 mile north), Brunswick (1 mile south-west), Brighton (1 mile east) and Hanover (1 mile east). Nearby towns on our patch include Portslade (3 miles west), Hangleton (3 miles north-west), Saltdean (5 miles east), Roedean (3 miles south-east), Rottingdean (4 miles east) and Ovingdean (3 miles east).
Near you in Seven Dials
Locally, jobs take us to sites close to Stanford Junior School, The Cow pub and St. Ann's Well Gardens. There’s a railway station in Seven Dials itself: Brighton station. Well-known places in the area include Montefiore Hospital (less than half a mile west) and Brighton Transport Museum (0.6 miles north). Green spaces nearby include Newmarket Hill and Whitehawk Hill.
Towns and villages near Seven Dials
What else we do in Seven Dials
Should maintenance staff do it?
Using site staff can make sense for a small touch-up, but larger jobs are different: a specialist brings efficiency, a consistent finish and a 12-month guarantee.
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
How a job runs
We begin with a short walk round with whoever looks after the building, agreeing which joints are in scope, where to start and what must stay open. After that, any old or failed material is removed, each joint is prepared and the new sealant goes in. For a job in Seven Dials, the main thing is a clear picture of the work. You will then get a fixed price for the work.
- First comes a look at the joints and, for older buildings, the asbestos records.
- A fixed quote covers the joints, products and order of work.
- We strip out the old sealant.
- The joints are prepared and resealed with the right product.
- We finish each building before moving to the next.
What we need from you
- Point out any areas we must not close
- Tell us what induction or permit system the site runs
- Send your site hours and access windows
Request a quote
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. The easiest way is to give us a call on 01277 525 020 or email drawings and photos.
Read more
Leave it or put it right?
Dealing with failed joints one report at a time is slow and scattered. Planned resealing covers a whole building or estate in one go, under a single quote and a single programme. Over time, UV, weather and movement wear any sealant out. Replacing it before it fails keeps water out.
The work involved drives the cost: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a quote and we’ll explain how it’s made up.
What you get with us
- Old sealant cut out, never sealed over
- Constructionline member
- One phone line for London, the South East and Scotland
- Public liability insurance in place
See how commercial sealant jobs are priced or our accreditations.