Hertfordshire · England
Window & door mastic in Bedwell, Hertfordshire
Our applicators work in Bedwell on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Rain getting in at the frame or under the sill
- Untidy mastic left by window fitters
- Cracked sealant at the sill ends
About our window mastic in Bedwell
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. If you have whistling draughts around closed windows and a bead that doesn’t match the frame, we can put it right.
Homes around Bedwell range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
All of our work is guaranteed for twelve months, in Bedwell and everywhere else we cover.
- Location
- Bedwell (SG1, SG2)
- Region
- Hertfordshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Common questions in Bedwell
Will you come out to Bedwell?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it worth replacing old sealant in an older home in Bedwell?
Usually, yes, if it’s cracked, shrunk, mouldy or coming away. New sealant won’t stick to old, so the old bead has to come out completely first.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
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 I paint over the new sealant?
It depends on the sealant. Silicone is not paintable, but some hybrid sealants are. Tell us if you’re decorating and we’ll choose accordingly.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Where are you based?
We work from Crawley. Our applicators cover Bedwell, along with the rest of our area.
Why it’s worth doing now in Bedwell
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. If we find failed glass units or worn seals, we’ll tell you. In an older home around Bedwell, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
What you pay reflects the work, not guesswork. That is why we ask a few questions first and agree the price before starting.
Why Bedwell customers choose us
- Homes, businesses and hotels
- Approved under the ARBOMaster scheme
- A 12-month guarantee on all work
- Full insurance on every job
See our cost guide and what customers say.
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
What affects the cost of window mastic
Your quote is based on your job. We look at:
- How many areas need sealing
- How easy the joints are to reach
- Mould in or behind the old joints
- Which sealant suits the joint
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, call 0345 464 0079 or send us an email for an honest opinion and a quote.
What we need to know
Before you ask for a quote, have a think about:
- Pictures of the joints, sent by email
- If someone has resealed it before
- What the problem is, such as mould, gaps, leaks or cracking
- Where the property is
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we will explain what’s involved and send you a clear quote.
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Ventilate rooms so frames don’t stay wet inside
- Clean frames with a soft cloth and soapy water
- Check the mastic once a year
- Clear any debris from frame drain holes
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early, and if anything looks wrong, just call 0345 464 0079 or email us.
Signs to watch for: 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 Bedwell
Water runs down the glass onto the sill, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
It’s worth asking for a quote if you see:
- Cracked or shrunken mastic around the frame
- Cracked sealant at the sill ends
- Gaps left after new windows were fitted
- Sealant in the wrong colour for the frame
If you let a flat or house near Stevenage station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What to look for in a quote
- What guarantee comes with the work
- Who does the work, and how experienced they are
- Is VAT in the price?
- Whether the sealant suits the joint
Towns and villages near Bedwell
Other services in Bedwell
Different surfaces, different methods
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. The threshold and the bottom corners take the most water, so they get particular care.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
Bedwell homes and the weather
Bedwell is part of Stevenage, one of the post-war new towns. Many homes date from the post-war decades, and many will have had their original windows replaced. That mastic ages as well, and sills and frame heads are where leaks start. Historic houses like Knebworth House (about 2.4 miles south-west) are a reminder that the area around Bedwell 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 Parish Church of St Andrew and St George, the joint between an old wall and a newer frame is usually the first place rain gets in. If you look after a building such as Broom Barns Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Bedwell is about 1 mile south-west of Stevenage, in Hertfordshire. Homes, rented property, offices and hotels in Bedwell is covered for window mastic, old or new, large or small. Every job comes with our 12-month guarantee. Bedwell is one of 381 towns and villages in Hertfordshire we cover for window mastic. You can also see our page for London, roughly 28 miles from Bedwell.
Jobs for window mastic in SG1 and SG2 is quoted and booked the same way as anywhere else. Window mastic is available to properties on Fox Road, Penn Road and Silam Road. You’ll find Bedwell on the A1155, so it’s easy for us to get to with everything needed for window mastic. Other places close to Bedwell include Stevenage (1 mile north-east), Pin Green (1 mile north), Chells (1 mile north-east), Rooks Nest (1 mile north) and St Nicholas (1 mile north-east). We also work in nearby towns such as St Albans (12 miles south-west), Bishop's Stortford (15 miles east), Welwyn Garden City (7 miles south), Harpenden (9 miles south-west), Hitchin (5 miles north-west) and Hoddesdon (13 miles south-east).
What’s near Bedwell
Locally, jobs take us to homes and businesses close to The Heathcote School, Marriotts School and The Standard Bearer pub, among other places. For rail, the closest station is Stevenage station, about 0.7 miles west. Nearby you’ll also find Wymondley Castle (3.2 miles north-west) and Stevenage Museum (less than half a mile south-west). Open spaces near Bedwell include Pryor's Wood.
How the visit works
At the end, we look at the finished work together. The work normally takes anything from an hour or two to a full day, depending on how many frames there are, depending on how much there is to do. In a smaller place like Bedwell, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Tell us if parking is tricky
- Keep pets and children clear of the area while we work
- Where the joints are inside, avoid wetting them before we arrive
Getting 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.