Facade and window perimeter sealing in Codicote, Hertfordshire
Facade sealing in Codicote, backed by over 20 years in commercial sealing. Fully insured and CHAS accredited.
- Weathered facade joints that have lost their grip
- Draughts around frames and panels
- Previous reseals run over old sealant
Facade sealing for Codicote sites
Tell us what needs sealing and where, with photos or drawings if you have them, and we’ll price it.
How we handle facade sealing in Codicote
External sealing depends on the weather more than most trades. The sealant needs a dry joint and temperatures inside the maker’s limits, so frosty or damp mornings can hold work back. We build that into the programme and tell you if the forecast changes the plan. The enquiries we see most involve old perimeter mastic that has dried out and failed seals around shopfront and entrance frames, across perimeter joints where frames meet the structure, cladding panel joints and stone and brick facade joints. Facilities teams, main contractors and managing agents in Codicote tend to want the same three things: a clear scope, tidy work and joints that don’t fail again.
Conversions around smaller places like Codicote often join new frames to old masonry or timber, and the sealant at those junctions has to cope with two materials that move differently, in a colour the planners or architect are happy with.
Every job is signed off with a 12-month guarantee. It’s a plain promise: if the work we did fails within twelve months, we return to fix it.
- Where
- Codicote (SG4)
- Region
- Hertfordshire
- Cover
- A 12-month guarantee
- Quote
- Fixed quote, scope in writing
- Telephone
- 01277 525 020
- Last updated
- 3 November 2026
What we can’t put right
Our job is the joint, not everything around it. On its own, sealant can’t deal with:
- Cracked or spalling substrates that need repair before sealing
- Replacing glass or failed glazing units
- Arranging specialist high-level access, which is planned with the client
Not sure which it is? You can ring 01277 525 020 or email the details over and we will tell you honestly before you book.
Surfaces we seal
- Stone and brick facade joints
- Coping and flashing joints
- Perimeter joints where frames meet the structure
- Shopfront frames
- Window and door perimeters
- Cladding panel joints
Also near Codicote
More services for Codicote
Doing it in-house
Certain joints really need a specialist: fire-rated seals that must follow a tested detail, trafficked floor joints and external movement joints among them. A poor seal in places like these tends to cost more to put right later.
Paperwork matters too. Many sites expect CSCS cards, RAMS and proof of insurance, and we will confirm the paperwork you need with the quote.
How a job runs
When we get to site, we sign in, go through any site induction and check how permits are handled. Everything around the joints gets protected before any cutting starts, with the work itself normally taking longer on a full elevation than on a handful of window perimeters, and it always depends on dry weather. What matters most for a job in Codicote is a clear list of what needs doing, so send photos of each area. A fixed quote follows.
- We look at the joints, the drawings and the access before pricing.
- Failed sealant is cut out along its full length.
- Both faces are cleaned and, where the product needs it, primed.
- Closed-cell rod fixes the depth, and the sealant grips two sides only.
- The new sealant goes in and is tooled firmly onto both faces.
- We walk the finished joints with you before handing over.
Before we start on site
- Tell staff and tenants when we’ll be in
- Explain the parking and delivery arrangements
- Send asbestos survey details if the building is pre-2000
Ask for a quote
A good quote starts with a clear picture: the joints involved, quantities, access and the product called for. Send what you have, and we’ll arrange a site visit if anything is unclear.
Advice
Questions we are asked in Codicote
Can the mastic package for our job in Codicote follow the site programme?
Yes, we work to the programme and the sequence the site sets. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.
Is a hospital such as Queen Elizabeth II Hospital somewhere you can work?
Yes. We work in healthcare settings as well as offices and schools. We follow the site’s permits, sign-in and infection-control procedures in every area.
Do you take on multi-site work?
Yes. A group of buildings can go on one quote, and you deal with one contact throughout.
Can you fit around our working hours?
We are in the office from 8am until 5pm, Monday to Friday. Let us know your site hours and access windows, and the work will be planned around them.
What do you charge?
Each job is quoted on its own details. For yours, give us a call on 01277 525 020 or send details through our quote form with a description of the work.
How long do sealant joints last?
There’s no fixed lifespan: movement, exposure, cleaning, traffic and the product all play a part. Sealant joints are maintenance items, so inspect them regularly.
Will you just go over the old sealant?
No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.
When to call us in Codicote
The wrong product causes its share of trouble: acetoxy-cure silicone may mark stone or corrode certain metals, and an interior product won’t last outdoors. Most external joints call for a neutral-cure, facade-grade sealant.
Site and facilities staff are often the first to spot these:
- Discoloured or dirty facade joints
- Old perimeter mastic that has dried out
- Sealant pulling away from frames or panels
- Cladding panel joints that have opened up
Historic houses such as Shaw's Corner (to the south-west of Codicote) are a reminder of the older buildings in the wider area, where sealing against old stone, brick or timber needs compatible products.
What your quote should include
- Which product they’ll use, and why it suits the joint
- Their approach to joint depth and backing
- Whether primer will be used where the manufacturer specifies it
- How they handle RAMS and site documents
Facades, frames and programmes in Codicote
Codicote is in the South East, one of the UK’s drier regions. Winter mornings still bring frost and condensation on frames and panels, so the external programme keeps a little slack. Central London is about 25 miles from Codicote. Towns within reach of London tend to keep building, from flats to offices and schools, and each scheme needs its mastic sealed to programme.
For a contractor working at a hospital such as Queen Elizabeth II Hospital (5 miles south-east of Codicote), perimeter and facade sealing is planned around patients and deliveries. When a school such as Codicote Church of England Primary School is extended or refurbished, the mastic package is often squeezed into the holidays.
Codicote is about 4 miles north-west of Welwyn Garden City, in Hertfordshire. We cover Codicote, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Codicote is one of 371 places in Hertfordshire on our list. Our London page has more on work in that area (25 miles or so).
We cover the SG4 postcode districts. Buildings on High Street, Baker's Lane and The Green are within our area. Just outside Codicote, we also work in Codicote Bottom (1 mile west), Driver's End (1 mile north), Nup End Green (1 mile north-east), Pottersheath (1 mile east) and Ayot St Lawrence (1 mile south-west). A short drive away, we cover Watford (15 miles south-west), Hemel Hempstead (12 miles south-west), Stevenage (5 miles north-east), St Albans (8 miles south-west), Welwyn Garden City (4 miles south-east) and Harpenden (5 miles south-west).
Near you in Codicote
We work on buildings around The Goat Public House, Monk's Walk School and Danesbury Park, among other places. Codicote’s nearest station is Knebworth station, about 2.4 miles north-east. Nearby you’ll also find Howard Centre (3.6 miles south) and Queen Elizabeth II Hospital (5 miles south-east). Open spaces near Codicote include Mardley Heath.
What sets the cost
To price the job, we consider:
- How accessible the joints are
- Joint width, depth and condition
- The site’s rules and procedures
- Working within restricted access windows
The price depends on how many linear metres there are, how much old material needs removing and how the joints are reached. Call for a quote once you have the details.
Before you send an enquiry
To price the job accurately, we need to understand the site. Send us:
- Your programme or deadline
- How the joints are reached, and at what height
- What the building is and how it’s used
- Photos of the joints, close up and from further back
A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or speak to us on 01277 525 020 or email us if you’d rather talk the job through.
For managing agents and facilities managers
We work for building owners and managing agents on everything from one building to a spread of sites around Codicote. Several sites can go on one quote, which keeps the paperwork simple.
Facilities managers want contractors who arrive with the paperwork sorted. Let us know the documents you need (RAMS, insurance certificate, CSCS details) and we’ll confirm them with the quote.