
Mastic sealant contractors in Somerley
Mastic sealing for building owners, managing agents and housing associations across Somerley, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Draught complaints from residents or tenants
- Water getting in round frames after rain
- Estate-wide sealant that is simply worn out
Mastic sealing for Somerley sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
What sealant work can’t fix
Being straight saves everyone time. Fresh joints won’t solve:
- Broken glass or failed sealed units
- Cracked or crumbling render, brick or stone at the joint edges (we will tell you if so)
- Water coming in from the roof or rainwater goods
Not sure which it is? You can ring 01277 525 020 or send details through our quote form and we’ll tell you honestly before you book.
What we seal
- Shopfronts below residential blocks
- Communal entrances and stairwells
- Window and door perimeters on blocks
- Balcony and threshold joints
- External wall and movement joints
- Communal kitchens and washrooms
About our mastic sealing in Somerley
Owners and agents normally inherit a building’s mastic rather than choose it, and it ages quietly: it sits round windows and doors, along external joints and through communal areas. When it hardens, splits or pulls away, water and draughts follow, and occupiers start reporting it. Most enquiries involve water getting in round frames after rain and patchy repairs in mismatched sealant, on window and door perimeters on blocks, communal entrances and stairwells and communal kitchens and washrooms. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Somerley is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.
Rural conversions near places like Somerley often set modern frames into older stone, flint or brick. Perimeter mastic there has to grip an uneven face and suit the building’s character.
Every job we finish is backed by a 12-month workmanship guarantee. If a joint we sealed fails because of how it was installed, we come back and put it right.
- Place
- Somerley (PO20)
- Region
- West Sussex
- Cover
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Phone
- 01277 525 020
- Page updated
- 3 November 2026

Cost factors for mastic joints
We price every job individually. The main factors are:
- Any access equipment needed
- The product specified
- The site’s rules and procedures
- Travel to remote or island sites
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.
What we need to price the job
A good diagnosis starts with the right details. Tell us:
- A wide shot and a close-up of the area
- Asbestos survey details if the building is older
- When you need the work done
- How the joints are reached, and at what height
Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we will arrange one.
Places near Somerley
Other services in Somerley
Aftercare for building managers
A few simple habits keep the new joints working:
- Make mastic part of routine maintenance checks
- Encourage occupiers to report problems at frames
- Have the asbestos survey to hand for older buildings
- Reduce knocks to communal area joints
Ask residents or tenants to report draughts or leaks round windows early. A quick report keeps a small repair small.
Planned resealing is easier to budget than emergency repairs. We can quote buildings in priority order so spending is spread.
Common questions from Somerley clients
Does a coastal location like Somerley affect which sealant is used?
It can. Coastal exposure works external joints harder than inland weather. That puts more weight on product choice, primers where the manufacturer specifies them, and correct joint sizing.
Do you work for managing agents with blocks near Fishbourne station?
Yes. Blocks of any size are within what we do. Photos of each elevation help us quote accurately.
What guarantee do you give on resealing?
Every building we reseal has a 12-month guarantee. It applies to our workmanship rather than damage or problems with the frames.
Can you follow the specification on our project?
Yes. Include it with the drawings when you ask for a quote, and we will price the work to it.
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, so we will confirm the curing time on the day.
How many days will you need on site?
That varies with the scale of the job, but the work usually takes a few days for most blocks, with larger programmes scheduled building by building. Larger or phased jobs take longer, and we’ll give you a timescale with the quote.
Do you work with property factors and landlords?
Yes, that’s exactly who this service is for. Buildings are scheduled in turn so you can plan around it.
Planned mastic for Somerley portfolios
Somerley lies within about 2 miles of the sea. For owners and agents with buildings near the sea, exposed elevations are where frame mastic fails first; plan inspections around that. At about 59 miles from central London, Somerley is within reach of the capital. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres.
Older community buildings, St James' Church among them, often have frames of mixed ages whose mastic varies. If you look after a block within reach of Fishbourne station (4 miles north of Somerley), frame and balcony mastic can be renewed on one programme.
Somerley is about 4 miles north-west of Selsey, in West Sussex. We cover Somerley and the rest of West Sussex, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Somerley is one of 373 places in West Sussex on our list for mastic joints. There’s a separate page for Portsmouth, about 10 miles away.
We take on mastic joints across the PO20 postcode area. For a building on Bell Lane and Hundredsteddle Lane or nearby, we can quote for mastic joints. Nearby places we also cover include Almodington (1 mile south-east), Birdham (1 mile north-east), Shipton Green (1 mile north-west), Earnley (1 mile south) and East Wittering (2 miles south-west). Further afield, our area takes in Bognor Regis (7 miles east), Chichester (5 miles north-east), Selsey (4 miles south-east), Littlehampton (14 miles east), Rustington (15 miles east) and Portfield (5 miles north-east).
Local landmarks in Somerley
In Somerley, that means premises near The Birdham Public House and the streets around them. For rail, the closest station is Fishbourne station, roughly 4 miles north of the centre. Nearby you’ll also find Chichester Castle (4.9 miles north-east) and St Richard's Hospital (5.2 miles north-east). Not far away are Pilsey Island.
How a job runs
Occupied buildings need a little choreography. We sign and contain the area we’re in, keep walkways clear and work section by section so the rest of the building stays in use. For a building around Somerley, tell us how to find it and who will meet us. Send that with the details and we’ll confirm the plan with the quote.
- First comes a look at the joints and, for older buildings, the asbestos records.
- The products and programme are set out in a fixed quote.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- We finish each building before moving to the next.
Getting the site ready
- Share your working hours and any access restrictions
- Make sure the joints can be reached
- Send asbestos survey details if the building is pre-2000
Getting a fixed quote
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Share whatever details you have and we’ll fill any gaps with a visit.
Related advice
When to call us in Somerley
Previous repairs often sealed new mastic over old. New silicone has nothing to grip on old silicone, so these repairs rarely last.
What tends to prompt an enquiry:
- Mastic failing across several blocks on an estate
- Failed external movement joints
- Window mastic that has split and shrunk
- Water getting in round frames after rain
If your remit includes a building such as Birdham CE Primary School, frame and door mastic can be programmed for the holidays.
What to look for in a quote
- Is depth set with backing rod, or bond-breaker tape in shallow joints?
- What level of public liability insurance do they hold?
- Whether primer will be used where the manufacturer specifies it
- Are they CHAS accredited or on Constructionline?
Building owners, agents and FMs in Somerley
We work for building owners and managing agents on everything from one building to a spread of sites around Somerley. Several sites can go on one quote, which keeps the paperwork simple.
Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we will confirm them with the quote.