Hampshire · England
Nyewood Window Mastic
Window mastic in Nyewood from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Rain getting in at the frame or under the sill
- Mastic that is falling out in pieces
- White mastic on grey or black frames
Window mastic in Nyewood
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that can’t move properly, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. We work on timber windows & doors, window sills and uPVC windows, and people most often call us about mastic that has split away from the wall and untidy mastic left by window fitters.
Outdoor sealant needs dry, clean surfaces, so work on frames around Nyewood is planned for dry weather. 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’ll sort it.
- Where
- Nyewood (GU31)
- Wider area
- Hampshire
- Cover
- A year, on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
New sealant can’t fix everything, and we’ll tell you before work begins. Sealant won’t put right:
- Worn gaskets, brush seals or a door that has dropped
- Rotten timber, which needs a joiner first
- Damp problems in the wall away from the window
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Surfaces we seal
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Aluminium frames
- Composite doors
- Window sills
Common questions in Nyewood
Is Nyewood in your area for window mastic?
Yes. We work across London and the South East, and Nyewood is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll send you a clear quote.
Is Nyewood within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you work for landlords and businesses?
Yes. We work in homes, commercial premises and hotels, and we are fully insured.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we’re fully insured.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Can you match the sealant to my frames?
Yes. White, brown, anthracite grey, black and clear sealants are all available.
What does window mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Are you insured?
Yes. We are fully insured.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Walk round the house once a year and look at the joints
- Wash the frames with mild soapy water
- Air rooms to keep condensation down around windows
- Repaint timber before it’s bare
Keep the new mastic undisturbed while it cures, for as long as we advise. Keep jet washers away from the frames.
Wet, windy weather is when failed mastic shows itself, but resealing works best in dry conditions. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
How the job changes by surface
Composite doors
Front doors take the weather head on, and the top and bottom corners tend to fail first. We pay most attention there.
Aluminium frames
Aluminium needs a sealant that bonds to coated metal, and acetoxy silicones aren’t used, as they can attack some metals. We use a neutral-cure product.
Why act early in Nyewood
Failed mastic is not a reason to replace sound windows. Where the frames are sound, new mastic usually deals with draughts and leaks at the edges. Problems with the glass or gaskets are for a window company, and we will say so. Older cottages and farmhouses around Nyewood 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 book with us
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- Anti-fungal silicone where joints get wet
- We leave the area clean and tidy
Read our cost guide and our reviews.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours for a handful of frames, longer for a whole house, and the area is left clean. In a small place like Nyewood, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each window and door with you.
- We remove the old mastic and clean the frame and the wall.
- Deep gaps are filled with backing rod to set the depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
Getting a quote
To get a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Related advice
Towns and villages near Nyewood
Other services in Nyewood
Signs you need window mastic in Nyewood
Water runs down the glass onto the sill, 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.
Signs it’s time to call us include:
- Water coming in at the bottom corners of a door
- Leaking joints at the ends of sills
- Mastic that is falling out in pieces
- Whistling draughts around closed windows
If you let a flat or house near Petersfield station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What to look for in a quote
- How much experience the applicator has
- The length of the guarantee
- How hidden problems are handled
- Whether they seal over old material or remove it
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 the joint depth matters as much as the finish.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Windows and doors in Nyewood
With historic houses such as Uppark (about 2.7 miles south-west) nearby, there’s older building stock in the area around Nyewood as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Historic houses such as Uppark, about 2.7 miles south-west, show how far back building around Nyewood goes, and older homes nearby need a sealant that suits their walls.
Nyewood is about 3 miles east of Petersfield, in Hampshire. We carry out window mastic for homes and businesses in Nyewood and the surrounding area. Nyewood is one of 683 places in Hampshire where we work. Our Portsmouth page covers work nearby.
Here we cover the GU31 postcode area for window mastic. If you are just outside Nyewood, we cover East Harting (1 mile south), South Harting (2 miles south-west), Elsted (2 miles south-east), Dumpford (2 miles east) and Elsted Marsh (2 miles east). Larger places within reach include Havant (10 miles south-west), Horndean (9 miles south-west), Alton (12 miles north-west), Waterlooville (10 miles south-west), Petersfield (3 miles west) and Purbrook (11 miles south-west).
Around Nyewood
The nearest railway station is Petersfield station, roughly 3.7 miles west of the centre. Well-known places in the area include Bear Museum (3.4 miles west) and Petersfield Community Hospital (3.7 miles west). The countryside around Nyewood includes Oakham Hill and Iping and Stedham Commons.