Mastic sealing for building owners and managing agents in St Lawrence, Isle of Wight
Mastic sealing for building owners, managing agents and housing associations throughout St Lawrence and nearby, carried out by CSCS-carded applicators. CHAS accredited and fully insured.
- Draughts at frames across a block
- Brittle perimeter mastic across a building
- Mastic failing across several blocks on an estate
Mastic sealing across St Lawrence
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How the job changes by surface
Estate-wide resealing programmes
A programme can start with the worst buildings and work down. You get one fixed quote per building or for the whole estate.
Tenement and older buildings
Some old mastics in pre-2000 buildings contain asbestos, so we check the asbestos register or survey first. Suspect material is tested before work continues.
How we handle mastic sealing in St Lawrence
Managing agents and housing associations usually need paperwork before anyone starts. For documents, tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we’ll confirm with the quote. We are CHAS accredited and a Constructionline member, with public liability insurance. We work on communal entrances and stairwells, shopfronts below residential blocks and balcony and threshold joints, and what we are called in for most is communal area joints that look neglected and occupiers reporting cold air round windows. Most enquiries from St Lawrence start with one failed joint and grow into a wider look at the building: we check the joints around it and give you an honest view of what needs doing now and what can wait.
Around smaller places like St Lawrence, older walls fitted with newer windows are a familiar sight. Perimeter mastic there has to grip an uneven face and suit the building’s character.
The 12-month guarantee is for workmanship rather than wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we are clear about what is covered before work starts.
- Where
- St Lawrence (PO38)
- Wider area
- Isle of Wight
- Guarantee
- 12 months on every job
- Price
- A fixed quote before we start
- Call
- 01277 525 020
- Last updated
- 3 November 2026
Common questions from St Lawrence clients
Will you take on a block within reach of Shanklin station?
Yes. Blocks of any size are within what we do. Send the address, photos of the elevations and your access arrangements, and we’ll give a fixed quote.
Our building in St Lawrence 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.
Can you work to our specification?
Yes. The specification and the manufacturer’s installation guidance are what we work to, and any queries are raised before we start.
What if the old mastic contains asbestos?
Asbestos removal isn’t part of our work. Anything suspect is tested before we carry on in line with the dutyholder’s asbestos management.
Can you send RAMS and CSCS details before starting?
Let us know your requirements: 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.
How do you reach windows on upper floors?
Every block is different. We agree access with you at quote stage so the fixed quote reflects it.
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.
Other services in St Lawrence
Maintenance after handover
Your facilities or cleaning team can help the joints last. Pass these on to them:
- Encourage occupiers to report problems at frames
- Include mastic in your cyclical inspections
- Share your contractor requirements early
- Keep bins and bikes away from communal door frames
Log the date and extent of the resealing for each block. That makes future programmes easier to plan and shows what was done.
The longer failed joints are left, the more likely the substrate edges break up. Once that happens, repairs come before resealing and the job grows.
What affects the price in St Lawrence
The price varies from site to site. It mainly depends on:
- Which sealant the job calls for
- How much existing material needs removing
- Whether the work must be split into stages
- Travel to remote or island sites
There’s no price list, since every building and every scope is different. For a fixed figure, call for a quote.
Sending details for a quote
To price the job accurately, we need to understand the site. Useful things to include:
- Any specification or named product
- The type of building and who uses it
- Anything awkward about access or site hours
- Where the site is, with the postcode
Send us photos, drawings or a joint schedule and a fixed quote comes back to you. If the job needs a look first, we will arrange a site visit.
Mastic sealing around St Lawrence: what changes locally
With the shore within about 1 mile, St Lawrence counts as a coastal location. On buildings near the shore, the side facing the weather usually needs its mastic renewed first; plan inspections around that. St Lawrence is in the South East, one of the UK’s drier regions. Outside work still depends on dry joints, while the elevations that take the most sun tend to show hardened mastic first.
If your remit includes a building such as St Francis Catholic and Church of England Primary Academy, frame and door mastic can be programmed for the holidays. Landlords with units on estates such as Ventnor Industrial Estate (1.5 miles north-east of St Lawrence) can bring frame, door and external mastic across several units into one programme. Churches, halls and community buildings such as St Lawrence'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.
St Lawrence is about 4 miles south-west of Shanklin, in the Isle of Wight. We send applicators to St Lawrence for mastic joints, handled exactly as we handle every other area. St Lawrence is one of 125 places in the Isle of Wight on our list. Our Portsmouth page has more on work in that area.
We cover the PO38 postcode districts. Buildings on Twining Road, Whitwell Road and Woolverton Road are within our area for mastic joints. Just outside St Lawrence, we also work in Steephill (1 mile east), Nettlecombe (1 mile north-west), Whitwell (1 mile north-west), Ventnor (1 mile east) and Bierley (2 miles north-west). Further afield, our area takes in Newport (8 miles north), Ryde (10 miles north), Cowes (12 miles north), Sandown (6 miles north-east), Shanklin (4 miles north-east) and East Cowes (12 miles north). Where a site is remote or on an island, we plan travel and materials carefully, so include the location in your enquiry.
Near you in St Lawrence
Locally, jobs take us to sites close to St Catherine's School and the streets around them. St Lawrence’s nearest station is Shanklin station, about 4.1 miles north-east. Nearby you will also find Arthur Webster Memorial Hospital for Children (4.1 miles north-east) and Longshoremans Museum (1.3 miles east). The countryside around St Lawrence includes Stenbury Down.
What sealant work can’t fix
Part of a good diagnosis is knowing where sealant stops. We’ll tell you if the real problem is any of the following:
- Broken glass or failed sealed units
- Leaks through the frame itself rather than the perimeter
- Masonry that has broken away beside the joint
If in doubt, call the office on 01277 525 020 or use the quote form and we’ll say what we think before you book.
Joints and surfaces we work on
- Window and door perimeters on blocks
- External wall and movement joints
- Communal entrances and stairwells
- Communal kitchens and washrooms
- Balcony and threshold joints
- Shopfronts below residential blocks
Why deal with it now?
Resealing ahead of leaks keeps it to a maintenance task. After water has got in, there may be damp, damaged plaster or decoration to put right too and occupiers notice. One visit to deal with every failing joint makes more sense than several trips to a place like St Lawrence, rather than one at a time. Send photographs of each area and we’ll quote for the lot.
A quote for mastic joints depends on how many there are, their condition and the access, and any specification that applies. Call for a quote.
Why us?
- One contact handling all your sites
- Colours confirmed for the specified product
- Joints cleaned back to sound surfaces
- Sealing commercial buildings since 2005
See how commercial sealant jobs are priced or our accreditations and insurance.
On site: what to expect
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. The work itself typically takes one or more days per building, depending on the joint lengths and the access, and we clear our waste as we work. For a building around St Lawrence, tell us how to find it and who will meet us. Send that with the details and we will confirm the plan with the quote.
- A building-by-building inspection lists the failed joints.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Failed sealant is removed and the 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
- Share the asbestos register for older buildings
- Send your site hours and access windows
- Agree which areas must stay open
Request a quote
Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or send photos by email.