Hampshire · England
Window Mastic in Blashford
Specialist window mastic for Blashford: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Draughts coming in around windows and doors
- Leaking joints at the ends of sills
- Hard, cracked sealant around windows
Do you need window mastic in Blashford?
Joints that are too thin or too deep fail early. A thin smear across a wide gap has nothing to it, while a joint packed solid cannot stretch. That is what backing rod is for.
The problems people normally mention when they call are:
- Damp patches on the reveal after heavy rain
- Cracked internal joints between frame and plaster
- Whistling draughts around closed windows
- Cracked or shrunken mastic around the frame
In the older streets around Church of St Mary and All Saints, the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before you book
- What happens if they find a problem under the old sealant
- Which colour the sealant will be
- Whether they’re fully insured
- What guarantee comes with the work
How we handle window mastic in Blashford
The mastic around a window or door seals the gap between the frame and the wall. Once that seal fails, wind and rain find the gap. The old mastic is removed and the joint resealed with a flexible exterior sealant. If you have untidy mastic left by window fitters and cracked internal joints between frame and plaster, we can put it right, on patio & French doors, timber windows & doors and composite doors alike.
Somewhere as small as Blashford, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
All our work is covered by our one-year guarantee.
- Place
- Blashford (BH24)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Why it’s worth doing now in Blashford
The work is quick compared with the damage it prevents: 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. Older cottages and farmhouses around Blashford can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit is generally more efficient than separate visits. We’ll give you a clear quote for the lot.
Why us?
- Approved under the ARBOMaster scheme
- Every job guaranteed for a year
- Experience in homes, commercial sites and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
Read what affects the cost or customer reviews.
The process
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before any work begins. Most jobs take a morning for a couple of windows and a door. Somewhere as small as Blashford, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
- Keep children and pets away from the work area
Ask for a quote
For window mastic in Blashford, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Related advice
More services for Blashford
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Repaint timber before it’s bare
- Wipe condensation off the frames
- Keep jet washers away from the mastic
- Avoid harsh chemicals near the mastic
Most silicone sealants will not take paint, so mention any painting plans before any work starts. There are paintable sealants for joints that need it.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and a cold room gets colder. A new joint closes it up.
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Your questions about window mastic in Blashford
Do you cover smaller places like Blashford?
Yes, Blashford is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is there a guarantee on window mastic in Blashford?
All our work, in Blashford and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Are you fully insured?
Yes. We’re fully insured, and we have been doing sealant work for more than 20 years.
Can you reach windows above the ground floor?
Yes, as long as they can be reached safely. Let us know about access when you ask for a quote so we can plan the job.
How many windows can you do in a day?
That depends on the number of frames, how they’re reached and the state of the old mastic. You will know the timing when we quote.
Is there any odour?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Can landlords and businesses book you?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels across Hampshire.
How we quote for window mastic
Call for a quick quote. What matters most is:
- How many rooms, windows or areas are involved
- The old material and how stubborn it is
- How easy the joints are to reach
- Whether there’s mould to deal with
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 we need extra access for height. We take all of that into account in your quote.
Asking for a quote
You do not need to know the technical terms. It helps if you can tell us:
- Photos by email, if that is easy
- The address or postcode of the job
- The problem you’ve noticed
- How many joints, rooms or windows are involved
We do not publish a price list, because every job is different. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or send us an email.
For landlords and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Windows and doors in Blashford
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 like Avon Tyrrell House (about 4.7 miles south-east) are a reminder that the area around Blashford 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 is traditional sand mastic.
For site and facilities teams at buildings such as Poulner Junior School, larger buildings have plenty of frames, and the mastic around each one ages.
Blashford is in Hampshire. For window mastic in and around Blashford, it’s easy to get a quote: please phone 0345 464 0079 or email us. We’re based in Crawley and cover Hampshire, Blashford included. 683 places in Hampshire are on our list. Southampton is on our list too, around 17 miles away.
Every address in BH24 is within our area for window mastic, from the main roads to the quietest streets. Whether your property is on Snails Lane, Ivy Lane and Woolmer Lane or anywhere close by, our applicators can take on the job. Nearby, we also carry out window mastic in Ellingham (1 mile north-west), Rockford (1 mile north-east), Poulner (1 mile south-east), Highwood (1 mile east) and Ringwood (1 mile south). Within a short drive, we also cover Totton (13 miles east), Lymington (13 miles south-east), New Milton (9 miles south-east), Barton on Sea (10 miles south-east), Marchwood (15 miles east) and Ashley (9 miles south-east).
Landmarks near Blashford
In Blashford, that means homes and buildings near Alice Lisle Inn and Ringwood School Academy and the streets around them. A little further out are St Leonard's Hospital (4.5 miles south-west). Open spaces near Blashford include Blashford Lakes and Linbrook Lake.