Wokingham · England
The Holt Sand Mastic
Our applicators work in The Holt on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Silicone on a period window that looks wrong
- Cement or filler used on old window joints that has cracked
- Mastic round period door frames that has failed
Leave it or put it right?
New sash windows are a major, costly change and on a listed home, consent may be needed. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Older cottages and farmhouses around The Holt can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why The Holt clients choose us
- A 12-month guarantee on all work
- Rated 4.9 stars on Google
- An ARBOMaster approved applicator
- Fully insured
Read our cost guide and our reviews.
Sand mastic for homes and businesses in The Holt
A silicone bead around a sash window can look out of place and does not suit the building. Sand mastic is the traditional choice and we can swap the silicone for it. Common call-outs are for window mastic to renew ahead of painting and modern sealant on a period surround, on tenement windows, timber door frames and period & listed homes.
Mastic can only go onto a dry, clean joint, so window work in The Holt is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- The Holt (RG10)
- Region
- Wokingham
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Questions from The Holt
Can you help a landlord with a rental near Wargrave station?
Yes. We work for landlords and agents as well as householders. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Do you cover The Holt for sand mastic?
Yes. We work across London and the South East, and The Holt is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
What guarantee comes with the work?
There’s a 12-month guarantee on every job.
Do the sealants smell?
There can be a smell while the sealant cures. Ventilation helps.
Can you match the sealant colour?
Yes. White, clear and grey are common, and other colours are available for many products, and we will agree it with you first.
How much does sand mastic cost in The Holt?
Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or send us an email with a short description of the job.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Places near The Holt
What else we do in The Holt
What sand mastic looks like in The Holt
With historic houses such as Harleyford Manor (about 3.9 miles north) nearby, there’s older building stock in the area around The Holt as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Wargrave station, any sash windows need sound mastic to keep draughts and rain out. Historic houses such as Harleyford Manor, about 3.9 miles north, show how far back building around The Holt goes.
The Holt is about 4 miles north-east of Woodley, in Wokingham. Jobs in The Holt get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Across Wokingham, we cover 35 places, The Holt among them. Our Reading page covers work nearby (7 miles or so).
Jobs for sand mastic in RG10 works the same way as everywhere else we cover. Sand mastic is available to properties on Blakes Lane and Bath Road and the roads around them. Other places close to The Holt include Kiln Green (1 mile east), Hare Hatch (1 mile south-west), Ruscombe (2 miles south-west), Waltham St Lawrence (2 miles south-east) and Twyford (2 miles south-west). We also work in nearby towns such as Reading (7 miles south-west), Wokingham (6 miles south), Woodley (4 miles south-west), Earley (6 miles south-west), Crowthorne (9 miles south) and Lower Earley (6 miles south-west).
Landmarks near The Holt
In The Holt, that means homes and buildings near Blessed Hugh Faringdon Catholic School and The Queen Victoria pub. The nearest railway station is Wargrave station, about 1.7 miles west of the centre. Nearby you’ll also find Frazer Nash Archives (3.2 miles north-west) and St Mark's Hospital (4.4 miles north-east). For a walk, there’s Weycock Hill and Hurley Chalk Pit.
Surface by surface
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.
Landlords, agents and businesses in The Holt
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
When something else is needed
To be straight with you, some problems need a different trade:
- Whether work needs listed building consent
- Putty and glazing repairs
- Timber that has rotted
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before booking.
Where we work in The Holt
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Tenement windows
- Timber door frames
- Brick reveals
What happens on the day
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the work takes a few hours per window, depending on the condition of the joints for a typical job. For a village or hamlet like The Holt, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Clear items away from the joints we are working on
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
Get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
Related advice
Common problems we fix in The Holt
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint.
Any of these means the joints need attention:
- Gaps where the frame meets the masonry
- Draughts and rain around sash boxes
- Mastic worn away on windows facing the weather
- Old sand mastic that has cracked, crumbled or fallen out
Schools such as Robert Piggott CofE Infant School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- What preparation is included
- Whether all the old sealant comes out first
- How the colour is chosen
- What the cure time is
Quotes for sand mastic in The Holt
Call for a quick quote. What matters most is:
- Any working-time requirements on site
- Which sealant suits the joint
- Whether there’s mould to deal with
- How many rooms, windows or areas are involved
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, ring 0345 464 0079 or email us for an honest opinion and a quote.
Asking for a quote
Photos by email are helpful but not essential. Try to tell us:
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
We do not publish a price list, because every job is different. Instead, we give you a clear price for your job. To get started, call 0345 464 0079 or drop us an email.