The Mastic Doctor team standing beside their branded vans outside an office building
Hertfordshire · England

Bedwell mastic sealing

Mastic sealing for building owners, managing agents and housing associations in Bedwell and across Hertfordshire. CHAS accredited, Constructionline member, with a 12-month guarantee on workmanship.

  • Cracked, hardened mastic round windows on a block
  • Failed external movement joints
  • Draught complaints from residents or tenants
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
Scope agreed and priced before anything starts.
3
We seal
The right sealant, to the right depth, neatly finished.
4
Guaranteed
Signed off, with 12 months’ guarantee.
Covering the South East & Scotland
Constructionline member
£5m PL insurance

Mastic sealing for businesses in Bedwell

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

How we handle mastic sealing in Bedwell

In buildings from before 2000, some old mastics contain asbestos. Before we disturb it, we ask to see the asbestos register or survey, and work stops for testing if there’s any doubt. We don’t remove asbestos-containing materials. Most enquiries involve communal area joints that look neglected and estate-wide sealant that is simply worn out, on communal entrances and stairwells, window and door perimeters on blocks and shopfronts below residential blocks. Facilities teams, main contractors and managing agents in Bedwell tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.

In a smaller place such as Bedwell, landlords and agents tend to look after small blocks, flats over shops, sheltered housing and commercial units. The mastic around their frames and external joints ages like anywhere else.

Every job ends the same way: guaranteed. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.

The Mastic Doctor team beside their liveried vans in front of an office building
Where
Bedwell (SG1, SG2)
Wider area
Hertfordshire
Cover
A 12-month guarantee
Quotes
A fixed quote before we start
Phone
01277 525 020
Last updated
3 November 2026

Keeping the joints sound

Regular inspection catches problems early. Specifically:

  • Share your contractor requirements early
  • Check the asbestos register before any old mastic is disturbed
  • Keep bins and bikes away from communal door frames
  • Include mastic in your cyclical inspections

If paintable sealant was used, decoration can follow once it has cured. Silicone typically can’t be painted, so keep decorators off it unless told otherwise.

One failed perimeter normally means others on the same building are close, so it pays to look at the whole elevation. A planned reseal saves repeated visits.

Questions we’re asked in Bedwell

Can you quote for a block close to Stevenage station?

Yes. Managing agents, landlords, property factors and housing associations are who this service is for. Send the address, photographs of the elevations and your access arrangements, and we will give a fixed quote.

Will you take on work at estates like Monkswood Retail Park, close to Bedwell?

Yes. Our area takes in Bedwell and its surroundings, with estates and business parks such as Monkswood Retail Park included. Photos and a short description are enough for a first look.

Do you guarantee the mastic work?

Our workmanship carries a 12-month guarantee and we hold public liability insurance.

Can weather delay the job?

It can, when the joints are outside. Sealant won’t bond properly to a wet or frosty joint, so external work may be moved if conditions aren’t right. Internal work is far less affected.

When is resealing likely to be due?

Nobody can honestly give a figure in years, since movement, weather, cleaning and use all affect it. Regular checks let you plan resealing before leaks or damage.

How many days will you need on site?

We plan the time on site around your programme and access. We’ll give you an estimate of time on site when we quote.

Will residents or tenants be disturbed?

Occupiers stay in the building throughout. We flag any areas that need internal access well before the dates so it can be arranged.

For managing agents and facilities managers

Agents, factors and owners’ representatives all follow the same route: send the details, accept a fixed quote, and we carry out and guarantee the work. We can agree access arrangements and keyholder contacts beforehand.

Blocks and communal areas make up much of the work for housing associations and agents. We phase the work so people keep access, with each stage agreed with your site contact.

Do you need mastic sealing in Bedwell?

Many failed joints were sealed without backing rod so the mastic is bonded on three sides. It can’t stretch properly and it tears.

Most enquiries start with something like this:

  • Water getting in round frames after rain
  • Cracked, hardened mastic round windows on a block
  • Old repairs sealed over failed mastic
  • Draughts at frames across a block

Buildings close to stations like Stevenage station (to the west of Bedwell) are often flats over shops, with frame mastic to keep sound.

Before you book anyone

  • How they handle RAMS and site documents
  • Are they CHAS accredited or on Constructionline?
  • How the existing material will be dealt with
  • Whether primer will be used where the manufacturer specifies it

Our contractor checklist

Diagnose, treat, sign off

On arrival, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before anything is cut or cleaned, with the work itself typically taking one or more days per building, depending on the joint lengths and the access. For a site in Bedwell, we plan so the whole job is done in one go where possible. Clear photographs and measurements help us bring the right products.

  1. First we look at the mastic on each building and note what needs replacing.
  2. You get a fixed quote, priced per building where that helps your budgeting.
  3. Dates, areas and access are agreed so residents or tenants can be told in advance.
  4. We remove the old mastic completely and clean the joint faces back.
  5. Backing rod and primer go in as the joint requires, then the new bead is placed and tooled.
  6. Finished joints are looked over and the 12-month guarantee confirmed.

Preparing the site

  • Tell us what induction or permit system the site runs
  • Send asbestos survey details if the building is pre-2000
  • Point out parking and an unloading spot

Ask for a quote

The quickest route to a quote is a few photographs and the site postcode. Upload them with the quote form, or call 01277 525 020 or use the quote form to discuss it first.

Ask for a quote

Related advice

For owners and agents in Bedwell

The South East is one of the drier parts of the UK. External mastic still waits for dry faces and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first. Stevenage, one of the planned towns of the twentieth century, takes in or adjoins Bedwell. Phased building means whole estates with frames of a similar vintage, ideal for a planned mastic programme.

For a school such as Broom Barns Primary School, perimeter mastic on windows and doors is a holiday job. Landlords with units on estates such as Monkswood Retail Park, 0.7 miles south-west of Bedwell, can bring frame, door and external mastic across several units into one programme.

Bedwell is about 1 mile south-west of Stevenage, in Hertfordshire. Looking for mastic sealing in Bedwell? We can help, as we do across Hertfordshire. Bedwell is one of 371 places in Hertfordshire on our list for mastic joints. There’s a separate page for London, roughly 28 miles from Bedwell.

We cover the SG1 and SG2 postcode districts for mastic joints. For a building on Fox Road, Penn Road and Silam Road or nearby, send details and we’ll quote for mastic joints. Being close to the A1155, Bedwell is straightforward for us to reach. Just outside Bedwell, we also work in 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). A short drive away, we cover 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).

Landmarks near Bedwell

We work on buildings around The Heathcote School, Marriotts School and The Standard Bearer pub. The nearest railway station is Stevenage station, about 0.7 miles west. Other landmarks nearby include Wymondley Castle (3.2 miles north-west) and Stevenage Museum (less than half a mile south-west). The countryside around Bedwell includes Pryor's Wood.

Map of Bedwell © OpenStreetMap contributors

Honest limits

Our job is the joint, not everything around it. On its own, sealant can’t deal with:

  • Leaks through the frame itself rather than the perimeter
  • Broken glass or failed sealed units
  • Masonry that has broken away beside the joint

If you’re not sure, just call the office on 01277 525 020 or send details through our quote form and we’ll give you a straight answer before you book.

Joints and surfaces we work on

  • Communal kitchens and washrooms
  • Window and door perimeters on blocks
  • External wall and movement joints
  • Shopfronts below residential blocks
  • Communal entrances and stairwells
  • Balcony and threshold joints

How the job changes by surface

Estate-wide resealing programmes

Using the same products throughout keeps the estate consistent and easier to manage.

Commercial and mixed-use buildings

Where retail and residential share a building the programme has to suit everyone. Tell us your site hours and access windows and we will plan around them.

Accreditations

Trusted. Accredited. Insured.