Surrey · England
Window & door mastic in Holmethorpe, Surrey
Window mastic for Holmethorpe, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Damp patches on the reveal after heavy rain
- Old mastic that has gone black or come away
- Gaps left after new windows were fitted
Window mastic in Holmethorpe
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. If you have old mastic that has gone black or come away and a bead that doesn’t match the frame, we can put it right, whatever the surface.
Around Holmethorpe, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows, and any older timber or sash windows need a sealant that suits them.
There’s a 12-month guarantee on every job.
- Location
- Holmethorpe (RH1, RH9)
- Region
- Surrey
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Work for landlords, hotels and businesses
Landlords and agents in Holmethorpe can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
The process
Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it usually takes most of a day for a typical house, less for a few frames. A visit to Holmethorpe is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us if parking is tricky
- On commercial sites, let us know about site rules
Getting a quote
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and send you a clear quote before we start.
Related advice
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Why act early in Holmethorpe
Draughts and leaks do not always mean new windows. Where the frames are sound, new mastic generally deals with draughts and leaks at the edges. Problems with the glass or gaskets are for a window company, and we will say so. In a smaller place like Holmethorpe, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Why us?
- Approved under the ARBOMaster scheme
- Neat joints and a tidy finish
- A 12-month guarantee on all work
- We’re fully insured
Holmethorpe homes and the weather
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Redhill station? Then renewing tired window mastic between tenants heads off draught and damp complaints. For site and facilities teams at buildings such as East Surrey College, its window and door frames need their mastic kept sound, just like a home’s.
Holmethorpe is about 1 mile north-east of Redhill, in Surrey. Jobs in Holmethorpe get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Holmethorpe is one of 395 places in Surrey we cover for window mastic. Our Crawley page covers work nearby (10 miles or so).
All of RH1 and RH9 is within our area for window mastic. Local streets include Mill Lane, Devon Road and Orpin Road. Close by, we work in South Merstham (1 mile north-east), Redhill (1 mile south-west), Gatton (1 mile north-west), Nutfield (1 mile south-east) and Merstham (1 mile north). Further out, we also cover Epsom (8 miles north-west), Horley (5 miles south), Ewell (8 miles north-west), Walton-on-Thames (14 miles north-west), Caterham (4 miles north-east) and Dorking (8 miles west).
Near you in Holmethorpe
Around Holmethorpe, our work takes us to homes and buildings near Inn on the Pond, Lime Tree Primary School and The Carrington School, among other places. Holmethorpe’s nearest station is Redhill station, roughly 0.8 miles south-west. Well-known places in the area include East Surrey Hospital (2.2 miles south) and The Belfry (0.9 miles south-west). The countryside around Holmethorpe includes Colley Hill and Reigate Heath.
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Repaint timber before it’s bare
- Make sure the drainage slots are not blocked
- Check the mastic once a year
- Use gentle cleaners on frames and sealant
On timber frames, keep the paintwork in good order, since wood that gets wet swells and shrinks more. Paint up to the joint, not over the silicone.
Leaks normally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
FAQs for Holmethorpe
Do you work for landlords with property near Redhill station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear price.
Will you come out to Holmethorpe?
Yes. Holmethorpe is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
How many windows can you do in a day?
The work takes anything from an hour or two to a full day, depending on how many frames there are. Access and how stubborn the old mastic is affect the time most.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We will tell you what we’re using and why.
Is the work guaranteed?
Yes, with our 12-month guarantee. Keeping drainage clear and checking the joints yearly helps them last.
Also in Holmethorpe
What we are called out for in Holmethorpe
Sills take more water than any other part of a window, so the sill ends and the joint below the frame are common leak points. Failed sealant there lets rain into the wall or behind the frame.
If you can see any of these, it’s time to have the joints looked at:
- White mastic on grey or black frames
- Gaps where the sill meets the wall
- Mastic that has split away from the wall
- Old mastic that has gone black or come away
In the older streets around Holy Trinity, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- Are they insured?
- How the joint is cleaned and prepared
- Whether you can choose the colour
- What guarantee comes with the work
What we cannot put right
To be straight with you, there are a few things sealant will not fix:
- Damp coming through the wall itself rather than the frame joint
- Draughts through the window seals rather than the frame
- Broken hinges, locks or handles
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think.
Surfaces we seal
- Patio & French doors
- Timber windows & doors
- Aluminium frames
- uPVC windows
- Window sills
- Composite doors