Hampshire · England
Holbury Window Mastic
We cover Holbury for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly.
- A bead that doesn’t match the frame
- Gaps between the frame and the inside reveal
- Cold air getting in at the frame edge
How to look after the new joints
After the cure time, these simple habits help:
- Make sure the drainage slots are not blocked
- Walk round the house once a year and look at the joints
- Keep paint off silicone joints
- Keep jet washers away from the mastic
Try not to touch the new joint while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
Window mastic in Holbury, done properly
Around Holbury we seal all kinds of frames: uPVC, aluminium, timber and composite, plus patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. If you have hard, cracked sealant around windows and damp patches on the reveal after heavy rain, we can help, whatever the surface.
Many houses in smaller places like Holbury have conservatories, garden rooms or patio doors. Those joints need the same attention as the main windows.
Every job comes with our one-year guarantee.
- Where
- Holbury (SO45)
- Wider area
- Hampshire
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Nearby places to Holbury
Other services in Holbury
Quotes for window mastic in Holbury
We don’t publish a price list, because jobs vary so much. The quote depends on:
- How much there is to do
- The old material and how stubborn it is
- Any working-time requirements on site
- Any mould that needs treating
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Asking for a quote
To make quoting easier, let us know:
- The address or postcode of the job
- How many joints, rooms or windows are involved
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we’ll talk you through the work.
Honest limits
We’d rather tell you now than do work that will not last, so these are the limits:
- A failed sealed unit that has misted up
- A sash or casement that will not close properly
- Draughts through the window seals rather than the frame
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Patio & French doors
- Window sills
- uPVC windows
- Timber windows & doors
- Composite doors
- Aluminium frames
What happens if it’s left?
Resealing frames is a short job: the visit takes a few hours for a few frames, or a day or more for a whole house. Wait for damp to appear and there may be plaster and decorating to sort out too. In a smaller place like Holbury, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or send us an email.
Why Holbury clients choose us
- Arbo and Everbuild products
- Anti-fungal silicone where joints get wet
- A choice of colours where the product allows
- Rated 4.9 stars on Google
FAQs for Holbury
Is window mastic in a coastal place like Holbury any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Is Holbury within the area you cover?
Yes, Holbury is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Do you work for landlords and businesses?
Yes. As well as householders, we work for landlords, agents, businesses and hotels across Hampshire.
Can you seal the gap between the frame and the plaster indoors?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
Does the work come with a guarantee?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
Will new mastic stop draughts?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that’s a different fix, and we will say so.
What do you need from me for a quote?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Window mastic in Holbury: local notes
Holbury is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Cadland Primary School, the mastic around its windows and doors needs looking after like any other building’s. Historic houses such as Beaulieu Palace House, about 2.9 miles west, show how far back building around Holbury goes, and older homes nearby need a sealant that suits their walls. Rented homes near Netley station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints.
Holbury is about 2 miles south of Hythe, in Hampshire. If you need window mastic in Holbury, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover Hampshire from our Crawley base, Holbury included. Holbury is one of 683 places in Hampshire we cover. You can also see our page for Southampton, about 6 miles away.
Work in SO45 works the same way as everywhere else we cover. That includes homes and businesses on Beechwood Road, Park Hill Close and Pondhead Close. Neighbouring places we cover for window mastic include Little Holbury (1 mile north-west), Roughdown (1 mile south), Hardley (1 mile north), Blackfield (1 mile south-east) and Langley (1 mile south). We also work in nearby towns such as Gosport (10 miles east), Eastleigh (10 miles north), Fareham (8 miles east), Totton (8 miles north-west), Chandler's Ford (11 miles north) and Hedge End (7 miles north-east).
What’s near Holbury
Around Holbury, our work takes us to homes and buildings near The New Forest Academy, among other places. Holbury’s nearest station is Netley station, roughly 3.8 miles north-east of the centre. Other landmarks nearby include Beaulieu Abbey And Display Of Monastic Life (3.1 miles west) and Calshot Castle (3.4 miles east). Green spaces nearby include Mercury Marshes.
The process
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself normally takes a few hours for a handful of frames, longer for a whole house, depending on how much there is to do. For a job in Holbury, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- For business premises, tell us about site rules or sign-in
- Keep pets and children clear of the area while we work
Ask for a quote
Getting a quote is simple: let us know what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we’ll take it from there.
Related advice
Surface by surface
Window sills
Every drop off the glass ends up on the sill, so the sill ends and the joint under the frame are vital. They’re cut out and resealed with exterior sealant.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour keeps the clean look.
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.