Highmoor mastic sealing
Mastic sealing for Highmoor, from a contractor working since 2005. Fully insured, with a 12-month guarantee.
- Complaints coming in block by block
- Draught complaints from residents or tenants
- Water getting in round frames after rain
Mastic sealing near Highmoor
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
General trades versus a specialist
Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.
Certain joints really need a specialist: for example fire-rated seals that must match a tested detail, trafficked floor joints and external movement joints. Getting these wrong usually costs more in the end than doing them right.
Mastic sealing for commercial buildings in Highmoor
For over 20 years we have resealed joints for owners, agents and landlords. 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. We work on external wall and movement joints, window and door perimeters on blocks and balcony and threshold joints, and the failures we’re asked to look at most are the same joint failures repeated across a portfolio and draughts at frames across a block. Most enquiries from Highmoor start with one failed joint and grow into a wider look at the building: we look at the rest while we’re there and tell you what we find.
Owners and agents with buildings around smaller places such as Highmoor tend to manage small terraces of association properties, converted barns and commercial units. Frame and wall-joint mastic on all of them ages and hardens.
Our 12-month guarantee is about workmanship, not wear and tear. Sealant wears with time, and movement, weather, cleaning and use decide how fast, so we spell out the cover before we begin.
- Place
- Highmoor (RG9)
- Region
- Oxfordshire
- Cover
- 12 months on our workmanship
- Quote
- Quoted before any work starts
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
Highmoor: questions and answers
Is Vanalloys Business Park, near Highmoor, within your area?
Yes. We cover Highmoor and the area around it, including industrial estates, business parks and retail parks such as Vanalloys Business Park. A few photographs and the unit address let us price the work.
Do you work for managing agents with blocks near Henley-On-Thames station?
Yes, we work for agents, landlords and housing associations with blocks of every size. We work to your notice and access arrangements.
Is mastic sealing guaranteed?
There is a 12-month guarantee on our workmanship and we hold public liability insurance.
How do you handle work on occupied blocks?
Residents and tenants carry on as normal. We flag any areas that need internal access well before the dates so you can arrange it with occupiers.
When can the area be used after sealing?
The product and site conditions decide that. Some take light use quickly, others need longer to cure, so we’ll confirm the curing time on the day.
Who decides which product is used?
A specification, where there is one, decides it. Without one, the joint decides: its movement, its surfaces and what it has to cope with.
Do you cover Highmoor?
Yes. We cover Highmoor, within our coverage of Greater London, South East England and Scotland. For a quote, call 01277 525 020 or email us.
Different surfaces, different methods
Communal areas
Entrance doors, screens and corridor junctions in communal areas all have sealant joints. Fresh joints make shared areas look looked after.
Commercial and mixed-use buildings
Commercial buildings have mastic at shopfronts, entrances and external joints. We work across portfolios on a planned basis.
Planned mastic for Highmoor portfolios
Rainfall across the South East, Highmoor included, is lower than in many parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are normally where frame mastic ages first. Highmoor is about 39 miles from central London. Commuter-belt towns tend to have plenty of managed blocks near stations and town centres.
Property owners at sites such as Vanalloys Business Park (to the south-west of Highmoor) can have mastic renewed between lettings. For a school such as Stoke Row Church of England School, perimeter mastic on windows and doors is a holiday job.
Highmoor is about 4 miles north-west of Henley-on-Thames, in Oxfordshire. Businesses, contractors and managing agents in Highmoor can call on us for mastic joints, as part of our coverage of Oxfordshire. 423 places across Oxfordshire fall within our area, including Highmoor. For work in that direction, see our Reading page (7 miles or so).
Postcode districts covered here: RG9 for mastic joints. Among the streets we cover are The Glebe and Holly Close, and sites on any of them can send details for a fixed quote. Nearby places we also cover include Highmoor Cross (1 mile south-east), Shepherd's Green (1 mile south-east), Catslip (1 mile north-east), Nettlebed (2 miles north) and Kingwood Common (2 miles south). A short drive away, we cover Didcot (11 miles west), Abingdon-on-Thames (15 miles north-west), Thame (13 miles north), Henley-on-Thames (4 miles south-east), Benson (6 miles north-west) and Chinnor (11 miles north).
Near you in Highmoor
Recent enquiries here include premises near The Dog and Duck pub, among other places. The closest station to Highmoor is Henley-On-Thames station, about 4.5 miles east. Open spaces near Highmoor include Warburg Nature Reserve.
How a job runs
We bring the products specified for the job, along with primers and backing rod. Joint faces are cleaned back to sound, dry surfaces, primer goes on where the manufacturer specifies it, and the sealant is tooled off neatly. For a building around Highmoor, tell us how to find it and who will meet us. Add it to your enquiry and we’ll build it into the plan.
- 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.
- Failed mastic is removed completely.
- Joint faces are cleaned, backed and resealed.
- Buildings are completed in turn.
Before we start on site
- For older buildings, check the asbestos register before work
- Confirm the product named in the specification
- Point out parking and an unloading spot
Request a quote
If there’s a specification, drawings or a tender package, send it with your enquiry, and we will price the work to it. Smaller jobs need nothing more than photographs and a few notes.
Related advice
When something else is needed
We seal joints; we don’t mend everything behind them. Sealant alone won’t deal with:
- Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
- Frames that are rotten, warped or broken
- Misted or failed double-glazed units
If you’re not sure, just give us a call on 01277 525 020 or email the details over and we will give you a straight answer.
What we seal
- External wall and movement joints
- Balcony and threshold joints
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- Communal entrances and stairwells
- Window and door perimeters on blocks
What we’re called out for in Highmoor
In communal areas, joints take knocks from bins, bikes, buggies and deliveries, and low-level joints get damaged. Regular cleaning wears them further.
Clients typically get in touch after noticing something like this:
- Damp patches beside frames
- Brittle perimeter mastic across a building
- The same joint failures repeated across a portfolio
- Movement joints with sealant missing
If you’re responsible for a building such as Church of St Paul, frame and door mastic needs the same attention as any other property.
Before you book anyone
- Who will actually carry out the work
- Will RAMS and insurance details be available?
- Do they follow the manufacturer’s priming guidance?
- What the guarantee covers, and for how long
Why deal with it now?
Looking at mastic during planned maintenance costs little. Waiting until leaks appear means working under pressure with less control over timing. Halls, stores and units around places like Highmoor may not be checked every day, so a failed joint can leak for a while before anyone sees it. Renewing joints in good time avoids the problem.
Access often affects the price as much as the sealing: easy-to-reach joints are quicker than those that need equipment to get to. Mention the access as part of your enquiry.
Why us?
- Fully insured, including public liability cover
- 12 months’ guarantee on every job
- Over 20 years of commercial sealing
- Constructionline member for supplier checks
Take a look at what affects the cost or our accreditations.