Windsor and Maidenhead · England
Sand Mastic in Dorney Reach
Sand mastic in Dorney Reach from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Tired mastic found when preparing windows for paint
- Weathered mastic on the most exposed windows
- Gaps where the frame meets the masonry
What affects the cost of sand mastic
The price is agreed before any work begins. It’s based on:
- The type of sealant required
- Whether there’s mould to deal with
- How many areas need sealing
- How much old sealant there is and how hard it is to remove
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.
Asking for a quote
When you contact us, these details help:
- Pictures of the joints, sent by email
- What’s wrong with the joints now
- How we’d reach the joints
- Any previous sealing or DIY work
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.
How we handle sand mastic in Dorney Reach
On many period windows, sand mastic looks right and suits the building. Newer frames usually get a flexible sealant instead, and we will talk through which suits your home. If you are dealing with cement or filler used on old window joints that has cracked and silicone on a period window that looks wrong, we can help.
Mastic can only go onto a dry, clean joint, so window work in Dorney Reach is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
All our work is covered by a one-year guarantee.
- Location
- Dorney Reach (SL6)
- Region
- Windsor and Maidenhead
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Keeping the joints in good condition
How long the joints last depends on use and care. Here’s what we suggest:
- Ask us before painting near the mastic
- Get any rot dealt with first
- Do not run silicone over sand mastic
- Keep sills and gutters clear so water drains away
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
Why deal with it now?
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and blends with the stone or brick. Where a wall is exposed, as many are in small places like Dorney Reach, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why choose Mr Mastic in Dorney Reach
- Old sealant always removed completely
- ARBOMaster approved applicator
- Fully insured
- 20+ years of sealant experience
Take a look at how sealant jobs are priced or customer reviews.
Common problems we fix in Dorney Reach
Rain on the window surround works into any crack and loosens it further. Windows facing the weather tend to go first.
Common reasons people contact us include:
- Mastic worn away on windows facing the weather
- Patchy fillers round a sash window
- Modern sealant on a period surround
- Cracked mastic round a front door frame
For landlords with property near Taplow station, any sash windows need sound mastic to keep draughts and rain out.
Comparing quotes
- What the quote includes, VAT included or not
- What insurance they hold
- What preparation is included
- Whether the sealant suits the joint
How the job changes by surface
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we’ll confirm what’s needed.
Towns and villages near Dorney Reach
Other services in Dorney Reach
What sand mastic looks like in Dorney Reach
Historic houses like Dorney Court (about 0.6 miles south-east) are a reminder that the area around Dorney Reach has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Dorney School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Church of St James, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Dorney Reach is about 2 miles south-east of Maidenhead, in Windsor and Maidenhead. Every kind of property in Dorney Reach can book us for sand mastic. Every job comes with our 12-month guarantee. Our area takes in 57 places across Windsor and Maidenhead, large and small. We also work in Reading, about 13 miles from Dorney Reach.
Jobs for sand mastic in SL6 is quoted and booked the same way as anywhere else. Local streets include Meadow Way, Harcourt Close and Oak Stubbs Lane. If you are just outside Dorney Reach, we cover Lake End (1 mile east), Bray (1 mile west), Dorney (1 mile east), Huntercombe (1 mile north-east) and Taplow (2 miles north). We also work in nearby towns such as Windsor (3 miles south-east), Boyn Hill (3 miles west), North Ascot (6 miles south), Cookham (4 miles north-west), Furze Platt (3 miles north-west) and Broomhall (8 miles south).
Local landmarks in Dorney Reach
In Dorney Reach, that means homes and buildings near Braywick Park, The E-Act Burnham Park Academy and The Pineapple Public House. The nearest railway station is Taplow station, roughly 1.1 miles north of the centre. Other landmarks nearby include The Reitlinger Bequest Museum (1.5 miles north-west) and Windsor Castle (3.6 miles south-east). Green spaces nearby include Bray Pit and Taplow Lake.
Your questions about sand mastic in Dorney Reach
Can you do sand mastic in Dorney Reach?
Yes, Dorney Reach is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear price.
Can you help a landlord with a rental near Taplow station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Can you replace silicone on a period window with sand mastic?
Generally, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
How long does sand mastic take?
It depends on the size of the job, but as a guide it takes anything from a few hours to a full day, depending on how many windows. We’ll give you a better idea when we quote.
What guarantee comes with the work?
Our one-year guarantee covers every job.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
Do you remove the old sealant?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few photos.
How the visit works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to a full day, depending on how many windows and we leave things clean and tidy. Somewhere as small as Dorney Reach, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- 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.
How to prepare
- Let us know about stairs, lifts or work at height
- Plan for the work area to be out of bounds to pets and children
- Let us know if you’ve seen damp or leaks
Get a quote
Need a quote? Please ring 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and give you a clear quote before we start.