Old Windsor mastic sealing
Need mastic sealing in Old Windsor? It’s simple: send details, get a quote, we seal, guaranteed.
- Communal area joints that look neglected
- Cracked, hardened mastic round windows on a block
- Estate-wide sealant that is simply worn out
Need mastic sealing in Old Windsor?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
Different surfaces, different methods
Estate-wide resealing programmes
Using the same products throughout keeps the estate consistent and easier to manage.
Window and door perimeters on blocks
Perimeter joints on blocks are best done elevation by elevation or block by block. How each joint is reached is agreed at quote stage.
Mastic sealing in Old Windsor
We diagnose before we prescribe: what has failed, what caused it and whether new sealant will actually solve it. Old mastic is removed entirely, the faces prepared, primer used where the maker specifies it and new sealant tooled in and backing rod used wherever a joint is deep. If you have old repairs sealed over failed mastic and leaks at window and door perimeters, we can put it right, on external wall and movement joints, balcony and threshold joints and shopfronts below residential blocks alike. For commercial sealant work in Old Windsor, you deal with one contact from quote to sign-off, whether it’s one building or several.
In a smaller place such as Old Windsor, 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: preparation, application and finish. Damage, later alterations by others and movement beyond what the joint was designed for sit outside it.
- Where
- Old Windsor (SL4)
- Region
- Windsor and Maidenhead
- Cover
- A 12-month guarantee
- Price
- Quoted before any work starts
- Call
- 01277 525 020
- Updated
- 3 November 2026
On site: what to expect
Occupied buildings need a little choreography. We sign and contain the area we’re in, keep walkways clear and move on in phases so staff and visitors can carry on around us. If neighbouring businesses or buildings around Old Windsor need work too, visits can be combined. Tell us your site hours and we will plan around them.
- A building-by-building inspection lists the failed joints.
- The quote is fixed and split as suits you.
- Dates and areas are agreed so occupiers can be told.
- Failed sealant is removed and the faces prepared.
- New sealant goes in with backing rod and primer where needed.
- We check the finished work and confirm the guarantee.
Getting the site ready
- Confirm the product named in the specification
- Explain the parking and delivery arrangements
- For older buildings, check the asbestos register before work
Getting a fixed quote
Pricing a project or setting a maintenance budget? Send the scope and any drawings, and we’ll return a fixed quote that you can work with. If you have questions first, phone 01277 525 020 or email a schedule or drawings.
Related advice
Mastic sealing in Old Windsor: the local picture
Rainfall across the South East, Old Windsor included, is lower than in many parts of the UK. Outside work still depends on dry joints, and the sunniest, most exposed sides of a building typically need attention first. At about 21 miles from central London, Old Windsor is within reach of the capital. Around the capital’s commuter belt, managing agents look after many blocks close to stations and town centres.
Property owners at sites such as Portland Business Park, 1.7 miles to the north of Old Windsor, can have mastic renewed between lettings. For a school such as King's Court First School, perimeter mastic on windows and doors is a holiday job. Owners of student blocks near Royal Holloway University (2.3 miles south of Old Windsor) can schedule frame and external mastic for the summer vacation.
Old Windsor is about 2 miles north-west of Egham, in Windsor and Maidenhead. Looking for mastic sealing in Old Windsor? We can help. 60 places across Windsor and Maidenhead fall within our area, Old Windsor among them. For work in that direction, see our Reading page.
We cover the SL4 postcode districts for mastic joints. Among the streets we cover are Church Road, Parker Gardens and Gregory Drive. Being close to the B3021, Old Windsor is easy to get to with materials and equipment. We also cover Wraysbury (1 mile east), Sunnymeads (1 mile north-east), Bishopsgate (1 mile south), Datchet (2 miles north) and Englefield Green (2 miles south). Further afield, our area takes in Maidenhead (8 miles north-west), Windsor (3 miles north-west), Boyn Hill (8 miles north-west), Cookham (9 miles north-west), Furze Platt (9 miles north-west) and Dedworth (3 miles north-west).
What’s near Old Windsor
Around Old Windsor, our work takes us to commercial buildings near St John's Beaumont School, Windsor Great Park and The Fox And Castle Public House and the streets around them. For rail, the closest station is Sunnymeads station, about 1.3 miles north-east of the centre. Other landmarks nearby include Windsor Castle (2.1 miles north-west) and Berkshire Yeomanry Museum (1.6 miles north-west). Open spaces near Old Windsor include St Ann's Hill and Virginia Water Lake.
Doing it in-house
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.
Site maintenance staff can often handle a short internal joint. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Also near Old Windsor
What else we do in Old Windsor
Looking after the joints
After handover, these steps help:
- Protect low-level joints in entrances
- Avoid piecemeal callouts where you can
- Encourage occupiers to report problems at frames
- Have the asbestos survey to hand for older buildings
Add mastic joints to your cyclical inspections. Check for splits, open joints, brittle mastic and lifting edges, and note the building and elevation.
Water getting in round frames can damage plaster, decoration and the frames themselves. Resealing early keeps the job small.
What sets the cost
The price varies from site to site. It mainly depends on:
- Working within restricted access windows
- The total length or number of joints
- The product specified
- How much existing material needs removing
Quantities, awkward access and phased working all shape the price. Site requirements like inductions and permits play a part as well, along with the time of year for external work.
What to include in your enquiry
A few photographs plus some basic facts will normally do. It helps to include:
- Approximate linear metres or a joint schedule
- Access details, including height
- Clear photographs of the problem areas
- What the building is and how it’s used
Quotes are fixed against the scope you send, so you know the figure before anyone is on site. To ask for one, ring 01277 525 020 or email a schedule or drawings.
Questions about Old Windsor
Is Old Windsor off your patch?
Not at all: smaller places are covered as well as towns. London and every South East county are within our area. Where we can, we group nearby jobs to make the most of each trip.
Does your area include sites such as Portland Business Park, near Old Windsor?
Yes. Estates, retail parks and business parks around Old Windsor, Portland Business Park among them, are all within reach. A few photographs and the unit address let us price the work.
How long before the joints can be used?
Curing time varies by product, and we confirm it on the day.
How much does the work cost?
It depends on the job: the volume of work, the access, the specified product and how it’s phased. Call for a fixed quote.
Do you guarantee the mastic work?
Our workmanship carries a 12-month guarantee, backed by public liability insurance.
What about access for upper-floor joints?
It depends on the building. How upper joints are reached is agreed before work is booked so the fixed quote reflects it.
Does the weather affect the work?
For external joints, yes. Sealant needs a dry joint and a temperature within the product’s range, so damp, frosty or very cold days can stop external work. Internal work is rarely affected.
What we can’t put right
Not every problem is a sealant problem, and we’d rather tell you before you spend money. It won’t fix:
- Roof leaks, gutters or failed flashings that aren’t sealant joints
- Materials that need asbestos testing before work
- Masonry that has broken away beside the joint
If in doubt, ring 01277 525 020 or email us and we’ll say what we think.
Where we work in Old Windsor
- Communal entrances and stairwells
- Communal kitchens and washrooms
- External wall and movement joints
- Balcony and threshold joints
- Shopfronts below residential blocks
- Window and door perimeters on blocks