Hampshire · England
Sand mastic for sash & case windows in Fair Oak, Hampshire
Our applicators work in Fair Oak on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Mastic that needs renewing before redecorating
- Open joints round the window box
- A silicone bead on a sash window that spoils the look
FAQs for Fair Oak
I let a flat near Hedge End station. Can you help?
Yes. We work for landlords and letting agents as well as householders. You can ring 0345 464 0079 or email us with the details for a clear quote.
Do you cover Fair Oak for sand mastic?
Yes, Fair Oak is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We will tell you what we’re using and why.
Is sand mastic better than silicone for my windows?
We’ll talk it through with you. Sand mastic suits many period homes, and modern sealants suit newer frames.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages.
Are you fully insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
When will the new mastic be hard?
Not right away. The skin forms first, and the full set comes later and we will give you an idea for your job.
Sand mastic in Fair Oak
Our applicators renew the sand mastic around sash and case windows and doors set in stone or brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. If you have mastic round period door frames that has failed and window mastic to renew ahead of painting, we can help, whatever the surface.
Houses in smaller places like Fair Oak can stand more in the open than those in a built-up town. That’s hard on the mastic around frames and sills.
Big or small, you get the same 12-month guarantee.
- Location
- Fair Oak (SO50)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Period and listed homes
On a listed home or in a conservation area, the right material matters. Sand mastic is often the preferred finish.
Brick reveals
Gaps between frame and brick let in rain and draughts. New mastic seals the gap.
The process
Every visit runs the same way: we check the joints, protect the area around them, carry out the job and tidy away. Most jobs take a few hours for a single window, longer for several. Parking around Fair Oak is normally easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
How to prepare
- Mention any leaks or damp you’ve noticed
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Advice
Towns and villages near Fair Oak
Other services in Fair Oak
Looking after it afterwards
After the cure time, these simple habits help:
- Avoid patching sand mastic with silicone
- Don’t paint over the new mastic
- Inspect the joints round the windows every year or so
- Plan mastic work ahead of painting
Leave the new mastic alone while it firms up. It forms a skin fairly soon, but takes longer to harden fully.
Sound mastic protects the frame. Once it fails, water can sit against the timber, which can lead to rot.
What we can’t put right
New sealant cannot fix everything, and we’ll tell you before we start. Sealant will not put right:
- Decisions on consent for listed homes
- Sash cords, weights and draught-proofing of the sashes
- Broken panes
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think before you book.
What we seal
- Sash and case windows
- Brick reveals
- Tenement windows
- Timber door frames
- Period & listed homes
- Stone surrounds
Why it’s worth doing now in Fair Oak
New sash windows are a major, costly change and on a listed home, consent may be needed. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Homes in smaller places like Fair Oak can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Combining jobs into one visit is normally more efficient than separate visits. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Fair Oak
- Quality sealants from Arbo and Everbuild
- Old sealant always removed completely
- Over 20 years’ experience
- Sanitary silicone with an anti-fungal additive in wet areas
Read how sealant jobs are priced or our reviews.
For landlords and businesses
Letting agents and landlords in Fair Oak can book us as well as householders. Resealing between tenancies keeps a property looking cared for.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Can I do it myself?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Windows and doors in Fair Oak
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 South Stoneham House (about 3.9 miles south-west) are a reminder that the area around Fair Oak has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near Saint Thomas, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. If you let a flat or house near Hedge End station, any sash windows need sound mastic to keep draughts and rain out. For site and facilities teams at buildings such as Fair Oak Junior School, larger buildings have plenty of frames, and the mastic around each one ages.
Fair Oak is about 2 miles east of Eastleigh, in Hampshire. Jobs in Fair Oak get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our Hampshire coverage runs to 683 places, and Fair Oak is one of them.
Postcode districts we cover here for sand mastic: SO50. Streets in the area include Dean Road, Witt Road and Sandy Lane, all of which we cover. Neighbouring places we cover for sand mastic include Horton Heath (1 mile south), Wintershill (2 miles east), Durley (2 miles south-east), Lower Upham (2 miles east) and Durley Street (2 miles east). Further out, we also cover Winchester (7 miles north), Gosport (13 miles south-east), Havant (15 miles south-east), Fareham (9 miles south-east), Horndean (13 miles east) and Totton (10 miles west).
Landmarks near Fair Oak
Locally, jobs take us to homes and businesses close to The Old George Public House, Wyvern Technology College and Wyvern Technology College, among other places. The closest station to Fair Oak is Hedge End station, roughly 2.2 miles south of the centre. A little further out are Moorgreen Hospital (2.7 miles south-west) and Eastleigh Museum (2.5 miles west). Open spaces near Fair Oak include Bishops Waltham Branch LNR.