Mastic sealant contractors in Thorncross
We carry out mastic sealing for building owners, managing agents and housing associations in Thorncross and the surrounding area. Send photographs or drawings for a fixed quote.
- Occupiers reporting cold air round windows
- The same joint failures repeated across a portfolio
- Repeated reactive repairs to the same buildings
Need mastic sealing in Thorncross?
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
When something else is needed
Honesty saves time and money. Fresh joints won’t solve:
- Frames that are rotten, warped or broken
- Water coming in from the roof or rainwater goods
- Misted or failed double-glazed units
If in doubt, call 01277 525 020 or email the details over and we’ll say what we think.
Where we work in Thorncross
- Communal kitchens and washrooms
- External wall and movement joints
- Window and door perimeters on blocks
- Communal entrances and stairwells
- Balcony and threshold joints
- Shopfronts below residential blocks
About our mastic sealing in Thorncross
Older blocks and commercial buildings can have mastic that contains asbestos. We check the asbestos register or survey before any old sealant is cut out, and work stops for testing if there’s any doubt. Removing asbestos-containing material isn’t something we do. Site teams most often ask us about complaints coming in block by block and movement joints with sealant missing, on window and door perimeters on blocks, communal entrances and stairwells and external wall and movement joints. Facilities teams, main contractors and managing agents in Thorncross tend to want the same three things: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
In and around smaller places like Thorncross, landlords and agents often look after small groups of housing association properties, converted farm buildings and community buildings. Mastic around frames and on external joints wears out in time, whatever the building.
We stand behind the joints we seal with a 12-month guarantee. That covers our preparation and application.
- Location
- Thorncross (PO30)
- Region
- Isle of Wight
- Cover
- 12 months on every job
- Price
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
Owners, agents and contractors
If you look after buildings for someone else, clear figures and clear communication matter. You get a fixed quote, an agreed scope and a walk round at the end, plus a 12-month guarantee.
Building owners and managing agents use us on everything from one building to a spread of sites around Thorncross. Several sites can go on one quote, so there’s one set of paperwork to deal with.
Places near Thorncross
Also in Thorncross
Questions we’re asked in Thorncross
Our building in Thorncross is near the coast: does that change the sealant?
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.
Is Thorncross too small for you to travel to?
Not at all. Thorncross is within our area. London and every South East county are within our area. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
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.
Is any job too small?
We quote for single jobs as well as large packages and programmes. Photos and a description are enough to start.
What paperwork can you provide?
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.
Do you work for managing agents and housing associations?
Yes, that’s exactly who this service is for. We work through buildings in a planned order so you can plan around it.
What do you charge?
We don’t publish prices, as every site differs. Send photographs or drawings and we will price it at a fixed figure.
What the job involves on each surface
External movement joints
Brickwork, blockwork and panel joints let a building move. Once that sealant goes, rain can reach the wall.
Window and door perimeters on blocks
On most blocks, the frame-to-wall joint is where failure shows first. We remove the failed mastic, prepare the faces, add backing rod if the joint is deep and reseal.
Maintenance after handover
To get the most from the new sealant:
- Ask residents or tenants to report leaks and draughts early
- Reduce knocks to communal area joints
- Have the asbestos survey to hand for older buildings
- Look at the sunniest and most exposed elevations first
Our workmanship is covered for 12 months, so report any failure in that time. After that, regular inspection keeps the programme on track.
Joints on a building age together so a single failure is a sign to check the rest. Doing them together saves going back again and again.
Diagnose, treat, sign off
At the end of each section, we remove the tape, clean down and inspect every joint with your site contact. Where the sealant needs time to cure before use, we tell you and sign the area. Jobs in and around smaller places like Thorncross are normally planned as a single visit, so we ask for photographs and rough sizes first. Then the right materials arrive with us.
- 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.
- Failed sealant is removed and the faces prepared.
- Joints are resealed and tooled.
- We check the finished work and confirm the guarantee.
Getting the site ready
- Point out parking and an unloading spot
- Share your working hours and any access restrictions
- Warn occupants and staff about the work
Getting a fixed quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we’ll price against exactly what is specified. For smaller jobs, photos and a description will do.
Related advice
Should maintenance staff do it?
Site maintenance staff can often handle a short internal joint. Where it goes wrong is preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
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.
Looking after buildings in and around Thorncross
The sea is no more than about 1 mile from Thorncross. For owners and agents with buildings near the sea, exposed elevations are where frame mastic fails first. Rainfall across the South East, Thorncross included, is lower than in many parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and south- and west-facing elevations, which take the most sun and rain, often age first.
Older buildings near Thorncross, from historic houses such as Wolverton Manor (to the north-east of Thorncross) to more modest stock, need compatible products when frames are resealed. If your remit includes a building such as Brighstone Church of England Aided Primary School, frame and door mastic can be programmed for the holidays. Churches, halls and community buildings such as St. Mary's Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
Thorncross is about 6 miles south-west of Newport, in the Isle of Wight. Looking for mastic sealing in Thorncross? We can help. Across the Isle of Wight, 125 places are covered, Thorncross among them. Sites around Portsmouth have their own page, roughly 18 miles from Thorncross.
If you need mastic sealing in PO30, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Sites close to Thorncross are covered too, including Brighstone (1 mile north-west), Moortown (1 mile north-west), Shorwell (1 mile north-east), Little Atherfield (2 miles south-east) and Atherfield Green (2 miles south-east). A short drive away, we cover Newport (6 miles north-east), Ryde (11 miles north-east), Cowes (9 miles north), Sandown (10 miles east), Shanklin (9 miles east) and Ventnor (8 miles east). Where a site is remote or on an island, travel and materials need planning ahead.
Around Thorncross
In Thorncross, that means premises near The Countryman pub and the streets around them. Nearby you will also find Whitecroft Hospital (4.4 miles north-east) and The Dinosaur Farm Museum (0.5 miles south-east). Green spaces nearby include Brighstone Down.