Surrey · England
Window Mastic in Holmbury St Mary
Mastic around window and door frames, sills and patio doors for homes and businesses in Holmbury St Mary and across Surrey. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rushed sealant from a window installation
- Draughty joints inside around the window
- Hard, cracked sealant around windows
Window mastic in Holmbury St Mary
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. We work on uPVC windows, patio & French doors and window sills, and people most often call us about untidy mastic left by window fitters and mastic that has split away from the wall.
Outdoor sealant needs dry, clean surfaces, so work on frames around Holmbury St Mary is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Whatever the size of the job, it’s backed by our 12-month guarantee in Holmbury St Mary and across Surrey.
- Location
- Holmbury St Mary (RH5)
- Wider area
- Surrey
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. In a small place like Holmbury St Mary, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What it costs depends on how much there is to do, how much old material has to come out and access to the work. You will have a clear quote before any work starts.
Why book with us
- Every job guaranteed for a year
- Over 20 years’ experience
- Rated 4.9 stars on Google
- An ARBOMaster approved applicator
Take a look at how sealant jobs are priced and our reviews.
How the job changes by surface
Window sills
Sills catch the water running down the glass, so the joints at each end and underneath matter. Each is cleaned out and resealed.
Composite doors
Draughts round the door leaf usually come from worn seals or adjustment, not the mastic. We seal the frame and let you know about anything else.
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Nearby places to Holmbury St Mary
Other services in Holmbury St Mary
Windows and doors in Holmbury St Mary
With historic houses such as Polesden Lacey (about 4.8 miles north) nearby, there’s older building stock in the area around Holmbury St Mary as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near St Mary The Virgins Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Gomshall station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Holmbury St Mary is about 5 miles south-west of Dorking, in Surrey. Holmbury St Mary gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our Surrey coverage runs to 395 places, Holmbury St Mary among them. Our Crawley page covers work nearby.
Jobs for window mastic in RH5 is quoted and booked the same way as anywhere else. That includes homes and businesses on Horsham Road and Felday Glade. Neighbouring places we cover for window mastic include Pitland Street (1 mile south), Peaslake (1 mile west), Farley Green (3 miles west), Ewhurst (3 miles south) and Ewhurst Green (3 miles south). Within a short drive, we also cover Guildford (8 miles north-west), Woking (11 miles north-west), Epsom (12 miles north-east), Horley (11 miles east), Redhill (11 miles east) and Ewell (13 miles north-east).
Landmarks near Holmbury St Mary
We work in homes and buildings around Wotton and Abinger Commons, The Volunteer pub and Hurtwood House, among other places. The nearest railway station is Gomshall station, about 2.1 miles north-west of the centre. Nearby you’ll also find Mesolithic Museum (0.7 miles north-east) and Abinger Castle (0.7 miles north-east). For a walk, there’s Leith Hill and Silent Pool.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep solvents and bleach off the sealant
- Keep drainage slots and sill grooves clear
- Use gentle cleaners on frames and sealant
- Keep timber frames painted
Silicone can’t generally be painted, so mention any painting plans before we start. We can use a paintable sealant where that matters.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. Resealing closes it.
Signs you need window mastic in Holmbury St Mary
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, while a joint packed solid can’t stretch. That is what backing rod is for.
These are the problems we are asked about most:
- Rushed sealant from a window installation
- Leaking joints at the ends of sills
- White mastic on grey or black frames
- Mastic that has split away from the wall
For site and facilities teams at buildings such as Belmont Prep School, its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- What preparation is included
- Whether they’re fully insured
- How hidden problems are handled
- Is VAT in the price?
How the visit works
Before we leave, we go over the finished joints with you. The work normally takes a morning for a couple of windows and a door, depending on the size of the job. For a village or hamlet like Holmbury St Mary, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Preparing for the visit
- Try not to wet indoor joints just before the visit
- Tell us about any previous sealing or DIY attempts
- Let us know about stairs, lifts or work at height
Get a quote
For window mastic in Holmbury St Mary, phone 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
Related advice
Holmbury St Mary questions
Do you cover Holmbury St Mary for window mastic?
Yes, Holmbury St Mary is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing.
Do you cover smaller places like Holmbury St Mary?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Do you seal inside as well as outside?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We can do either or both.
Do you guarantee window mastic?
Yes. All our work carries a 12-month guarantee, and we are ARBOMaster approved applicators.
How long will my window job take?
That depends on the number of frames, how they’re reached and the state of the old mastic. You’ll know the timing when we quote.
Can new window sealant be painted?
That depends on the product. Some hybrid sealants can be painted; silicone cannot. Mention any painting plans before any work starts.
How much does window mastic cost in Holmbury St Mary?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
What affects the quote in Holmbury St Mary
The price is agreed before any work begins. It’s based on:
- How many areas need sealing
- How easy the joints are to reach
- The type of sealant required
- When we can work, for business premises
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
What to tell us for a quote
There’s no need for technical detail. Just tell us:
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
- Any access issues, like height or stairs
- Photos by email, if that is easy
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.