West Berkshire · England
Window Mastic in Goddard's Green
Mastic around window and door frames, sills and patio doors for homes and businesses in Goddard's Green and across West Berkshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Mastic that’s falling out in pieces
- Whistling draughts around closed windows
- Rushed sealant from a window installation
How we handle window mastic in Goddard's Green
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. We work on patio & French doors, window sills and composite doors, and the jobs we see most are black, perished sealant on frames and sealant in the wrong colour for the frame.
Outdoor sealant needs dry, clean surfaces, so work on frames around Goddard's Green is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
A one-year guarantee comes as standard.
- Where
- Goddard's Green (RG7)
- Wider area
- West Berkshire
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What we can’t put right
In fairness, there are a few things sealant won’t fix:
- A sash or casement that won’t close properly
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Damp coming through the wall itself rather than the frame joint
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before you book.
Where we work in Goddard's Green
- Window sills
- Timber windows & doors
- Patio & French doors
- Aluminium frames
- uPVC windows
- Composite doors
Different surfaces, different methods
Patio & French doors
Not every patio door leak is a mastic problem: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We check before we reseal.
uPVC windows
Fitters’ mastic on plastic frames is sometimes thin and rushed. We cut it out, back any deep gaps and reseal properly.
What affects the quote in Goddard's Green
There’s no set price list, because jobs vary so much. What we look at:
- The old material and how stubborn it is
- The product the joint needs
- How much there is to do
- Access and height
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Helping us quote
When you contact us, these details help:
- The type of property
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
For window mastic in Goddard's Green, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
Landlord and commercial work in Goddard's Green
We also work for property managers and facilities teams. Several sites can be quoted together, and we are fully insured for the work.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
What happens if it’s left?
Draughts and leaks don’t always mean new windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. If we find failed glass units or worn seals, we’ll tell you. Around Goddard's Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we will go through it with you.
Why choose Mr Mastic in Goddard's Green
- Neat joints and a tidy finish
- Sanitary silicone with an anti-fungal additive in wet areas
- We agree the colour with you first
- White, clear, grey or another colour, product permitting
Read our cost guide or what customers say.
The process
We keep the work tidy and contained to the area we’re working on, so you can get on with your day. The job normally takes anything from an hour or two to a full day, depending on how many frames there are, and we tell you how long to leave it before we go. Somewhere like Goddard's Green needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any previous sealing or DIY attempts
- Keep children and pets away from the work area
Get a quote
Want a quote for window mastic? Please call 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
What we are called out for in Goddard's Green
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and timber moves with moisture as well as temperature.
Look out for these signs:
- A bead that doesn’t match the frame
- Untidy mastic left by window fitters
- Cracked internal joints between frame and plaster
- Gaps where the sill meets the wall
Historic houses such as Stratfield Saye House, about 3.7 miles south-east, show how far back building around Goddard's Green goes, and older homes nearby need a sealant that suits their walls.
What to look for in a quote
- Who does the work, and how experienced they are
- Is VAT in the price?
- Whether you can choose the colour
- Whether they’re fully insured
What window mastic looks like in Goddard's Green
With historic houses such as Stratfield Saye House (about 3.7 miles south-east) nearby, there’s older building stock in the area around Goddard's Green 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. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Mortimer station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. If you look after a building such as Garland Junior School, the mastic around its windows and doors needs looking after like any other building’s.
Goddard's Green is about 5 miles south-west of Reading, in West Berkshire. Goddard's Green gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 155 places across West Berkshire, large and small.
Work in RG7 works the same way as everywhere else we cover. If you are just outside Goddard's Green, we cover Wokefield (1 mile east), Burghfield Common (1 mile north-west), Stratfield Mortimer (1 mile south), Mortimer (2 miles south-west) and Mortimer West End (3 miles south-west). We also work in nearby towns such as Newbury (12 miles west), Thatcham (9 miles west), Speenhamland (12 miles west), Spencers Wood (3 miles east), Calcot (3 miles north) and Shaw (12 miles west).
Landmarks near Goddard's Green
We work in homes and buildings around The Willink School, The Willink School and The Rising Sun pub. For rail, the closest station is Mortimer station, roughly 1.5 miles south. Well-known places in the area include Thames Valley Police Museum (2.3 miles north-west) and Beaumys Castle (2.9 miles south-east). Green spaces nearby include Hosehill Lake and Fobney Island Wetland Reserve.
Towns and villages near Goddard's Green
Also in Goddard's Green
FAQs for Goddard's Green
Is Goddard's Green in your area for window mastic?
Yes. We work across London and the South East, and Goddard's Green is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
I let a flat near Mortimer station. Can you help?
Yes, we work for landlords and agents. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Will new mastic stop draughts?
In many cases. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do you work on first-floor windows?
Yes, in most cases. We plan safe access before the job.
Do you guarantee window mastic?
Yes, with our one-year guarantee. Keeping drainage clear and checking the joints yearly helps them last.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used before we leave.