Hertfordshire · England
Window Mastic in Great Hormead
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Great Hormead. Fully insured, ARBOMaster approved and guaranteed for a year.
- Cracked sealant at the sill ends
- Old mastic that has gone black or come away
- White mastic on grey or black frames
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Window mastic for homes and businesses in Great Hormead
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. Typical jobs include a bead that doesn’t match the frame and water coming in at the bottom corners of a door, across uPVC windows, window sills and timber windows & doors.
Outdoor sealant needs dry, clean surfaces, so work on frames around Great Hormead is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
You get a one-year guarantee, the same in Great Hormead as everywhere else we work.
- Location
- Great Hormead (SG9)
- Wider area
- Hertfordshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Also near Great Hormead
Other services in Great Hormead
What affects the quote in Great Hormead
Every job gets its own quote. This is what makes a difference:
- Any mould that needs treating
- Whether the work is at height
- The type of sealant required
- When we can work, for business premises
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
When you contact us, it’s useful to know:
- Photos by email, if that is easy
- What’s wrong with the joints now
- How we’d reach the joints
- Whether it has been sealed before
For a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Why deal with it now?
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. In a small place like Great Hormead, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
What you get with us
- You choose the colour before work begins
- Anti-fungal sanitary silicone in wet areas
- 4.9 on Google from 180+ five-star reviews
- Colour picked to suit the job
See how sealant jobs are priced and our reviews.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Do not use solvent cleaners on the joint
- Use gentle cleaners on frames and sealant
- Keep drainage slots and sill grooves clear
- Look round the frames every year or so
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.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.
How it works
Once we are on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take most of a day for a typical house, less for a few frames. Somewhere as small as Great Hormead, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
How to prepare
- Clear the area around the work
- Keep pets and children clear of the area while we work
- Try not to wet indoor joints just before the visit
Ask for a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or email us.
Advice
For landlords and businesses
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.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Honest limits
New sealant cannot fix everything, and we will tell you before we start. It won’t solve:
- Damp coming through the wall itself rather than the frame joint
- A door that needs adjusting, rehanging or new seals
- Condensation trapped between the panes
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think.
Surfaces we seal
- uPVC windows
- Window sills
- Aluminium frames
- Patio & French doors
- Timber windows & doors
- Composite doors
Great Hormead questions
Will you come out to Great Hormead?
Yes. Great Hormead is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Great Hormead in your area for window mastic?
Yes. We work across London and the South East, and Great Hormead is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing.
Are you fully insured?
Yes. We’re fully insured.
When is the sealant fully cured?
Different products cure at different speeds, so please follow the time we give you.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Can you do upstairs windows?
Yes, in most cases. Access is planned before any work starts.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We find where the air is coming from before we reseal.
Can you do several jobs on one visit?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
Great Hormead homes and the weather
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of St Nicholas include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Managing a site like Hormead Church of England (VA) First School? Then its window and door frames need their mastic kept sound, just like a home’s.
Great Hormead is in Hertfordshire. We provide window mastic to homeowners, landlords and businesses in Great Hormead and the surrounding area, as part of our work across Hertfordshire. Across Hertfordshire, we cover 381 places, Great Hormead among them. Our Chelmsford page covers work nearby.
All of SG9 is within our area for window mastic. Whether your property is on Anderson's Lane, Halfacre Lane and Horseshoe Lane or a nearby road, our applicators can take on the job. Close by, we work in Daw's End (1 mile north), Anstey (2 miles north), Wyddial (2 miles north-west), Layston (2 miles west) and Brent Pelham (2 miles east). Within a short drive, we also cover Stevenage (10 miles west), Bishop's Stortford (8 miles south-east), Welwyn Garden City (14 miles south-west), Hitchin (13 miles west), Hoddesdon (14 miles south) and Hertford (12 miles south-west).
Around Great Hormead
Around Great Hormead, our work takes us to homes and buildings near The Beehive pub. A little further out are Brent Pelham (1.7 miles north-east).