Hampshire · England
Window Mastic in Michelmersh
Mastic around window and door frames, sills and patio doors for Michelmersh, backed by a 12-month guarantee. Ask us for a quote.
- Whistling draughts around closed windows
- Untidy mastic left by window fitters
- Damp patches on the reveal after heavy rain
Window mastic in Michelmersh
The new joint does not have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the bead blends with the window rather than framing it. If you’re dealing with mastic that’s falling out in pieces and damp patches on the reveal after heavy rain, we can help.
Mastic can only go onto a dry, clean joint, so window work in Michelmersh is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
Each job carries a 12-month guarantee, large or small.
- Where
- Michelmersh (SO51)
- Wider area
- Hampshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
At the end, we look at the finished work together. The visit itself generally takes a morning for a couple of windows and a door, depending on the size of the job. In a small place like Michelmersh, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- On commercial sites, let us know about site rules
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
Getting a quote
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Read more
FAQs for Michelmersh
Is Michelmersh within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Mottisfont & Dunbridge station. Can you help?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Will resealing my frames help with draughts?
It will if the frame joint is the problem. We find where the air is coming from before we reseal.
Does the work come with a guarantee?
Yes. Every job comes with our 12-month guarantee, and we’re ARBOMaster approved applicators.
What does window mastic cost?
We don’t publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses, and we’re fully insured.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What affects the cost of window mastic
There’s no set price list. The quote depends on:
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
- Any mould that needs treating
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
What we need to know
You don’t need to know the technical terms. Just tell us:
- Any access issues, like height or stairs
- What’s wrong with the joints now
- Photos by email, if that’s easy
- Whether it has been sealed before
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved and give you a clear quote.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
We also work for property managers and facilities teams in Michelmersh and across Hampshire. Several sites can be quoted together, and we are fully insured for the work.
Places near Michelmersh
More services for Michelmersh
Can I do it myself?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
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.
Surface by surface
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A tidy bead in anthracite grey, black or a matching colour suits the frame.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. The paint or stain needs to be sound where the sealant meets it.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Clean frames with a soft cloth and soapy water
- Do not use solvent cleaners on the joint
- Keep timber frames painted
- Ventilate rooms so frames do not stay wet inside
Most silicone sealants won’t take paint, so if you’re planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
Look out for the warning signs: split or missing mastic, gaps, damp patches inside or black mould on the reveal. Any of these is worth a call.
Signs you need window mastic in Michelmersh
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
Signs it’s time to call us include:
- Rushed sealant from a window installation
- Damp patches on the reveal after heavy rain
- White mastic on grey or black frames
- Draughty joints inside around the window
Letting a property close to Mottisfont & Dunbridge station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Before booking anyone
- Is VAT in the price?
- Are they insured?
- Whether they seal over old material or remove it
- What happens if they find a problem under the old sealant
Window mastic in Michelmersh: local notes
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. Historic houses like Mottisfont Abbey (about 1.2 miles north-west) are a reminder that the area around Michelmersh has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Homes close to Church of St Mary include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Michelmersh is about 3 miles north-west of Romsey, in Hampshire. Michelmersh gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Michelmersh is one of 683 towns and villages in Hampshire we cover for window mastic. For nearby work, see our Southampton page.
Jobs for window mastic in SO51 is quoted and booked the same way as anywhere else. That includes homes and businesses on Yew Tree Lane, Staff Road and Haccups Lane. We also cover the places around Michelmersh: Timsbury (1 mile south), Stonymarsh (1 mile north-west), Kimbridge (1 mile west), Mottisfont (1 mile west) and Dunbridge (1 mile west). Further out, we also cover Winchester (9 miles east), Eastleigh (9 miles south-east), Andover (12 miles north), Totton (8 miles south), Chandler's Ford (6 miles south-east) and Hedge End (12 miles south-east).
Landmarks near Michelmersh
We work in homes and buildings around The Malthouse Inn. The closest station to Michelmersh is Mottisfont & Dunbridge station, about 1.5 miles west. A little further out are King Johns House (3 miles south) and Romsey Community Hospital (3.1 miles south-east). The countryside around Michelmersh includes Emer Bog and Baddesley Common.