Window Replacements 2026/2027 - Low Rise Flats

We are seeking Sub-contractors to carry out Window Replacement Works to Hull City Council Domestic Properties, it is expected that work will commence 18 May 2026 with works expected to be completed by 30 September 2027.

The works will cover the supply and fit of windows to approximately 429 Properties across the City of Hull.

As part of this scheme of works there are also requirements for additional sub-contractors for the provision of scaffolding, building contractors for the removal and bricking up on Juliet Balconies and for the relocation of satellite dishes.

The available work packages will be awarded in Lots.

Lot 1 - Supply and Install of Window Frames

Lot 2 - Scaffolding

Lot 3 - Builders - Removal and Bricking up of Juliet Balconies

Lot 4 - Remove and Re-fix of Satellite Dish

Lot 1 - Windows - Supply and Install of Window Frames

Sub-contractors will be expected to complete a minimum of 4 properties per week.

There are an expected 429 properties in total that will require window replacement works.

Pricing must cover all items listed on Lot 1 as listed within Document 3 - Price Schedule, failure to provide a fully completed price schedule for this lot will result in your organisation being removed from the tender at the selection stage of the process and you will not progress to the award stage of the contract. Please see section 3 - Selection Criteria for further information.

When completing the price schedule sub-contractors must put their pricing in the boxes highlighted in yellow and refer to the Qualifications for the given lot and individual property survey sheets contained within the same document (Please note that there are multiple tabs on this spread sheet). Sub-contractors must also consider the included specification information when submitting their bid.

All pricing must be returned on the Price Schedule provided; quotes will not be accepted.

The usage figures quoted either in this document of Document 3 - Price Schedule are estimated figures only and KWL can offer no guarantee of spend, volume or frequency of orders made to any sub-contractor.

Sub-contractors must confirm that their windows meet the issued specification. Failure to provide to provide this confirmation will result in your organisation being removed from the tender at the selection stage of the process and you will not progress to the award stage. Please see Section 3 - Selection Criteria for further information.

Please note that if there are any errors or omissions in the specification of the provided windows upon supply, this will need to be remedied at the sub-contractor's own expense.

All window contractors are required to be FENSA or an equivalent accreditation (KWL's decision will be final on any offered alternative). Sub-contractors, that fail to meet this requirement will be removed from the tender process at the Selection Stage and will not progress to the award stage of this tender.

Sub-contractors will be monitored on the following KPI's

• % of orders completed to the agreed programme of works
• % of tenants who were satisfied with the planned works, when asked
• % of planned works where the quality of work was to the required standard when inspected by HIS

Sub-contractors must consider the qualifications shown below when preparing and submitting their bid

All works as per UPVC Window Specification - Final, & KWL - Surveys - 2025 - 26 Planned Window Replacement per property, & Juliet Balcony wall specification - addendum.

Contractors responsible for visiting site and taking final accurate measures for pricing purposes. All sizes provided are indicative.

KWL to temporarily disconnect gas supply for any works near to the combi boiler flue and reconnect gas supply to the boiler upon completion of works

KWL to provide on site welfare

KWL to provide limited storage on site.

KWL to provide scaffolding.

NB: All due care is to be taken when working near to gas services especially when undertaking hot works, drilling/coring and similar. In the event that a risk could not be safely managed the gas service must be isolated - informing the residents one week in advance and working with H.I.S. (who will arrange for Northern Gas Networks to arrange the shutoff / reconnection works)

KWL will not renumerate contractors for delays realised in the event of adverse weather conditions postponing works for any period of time.

KWL will not renumerate contractors for lost time realised in the event of no access to a property or works area for any reason such as, but not limited to tenant failed appointment, tenant failure to clear works area.

All bare timber surfaces to be primed prior installation.

All work to include supply and install of all items as per specification.

Contractors to allow for all making good to internal and external surfaces to match existing, this will include but not limited to plaster, render and brickwork.

KWL to provide general waste skips located on the roadside. Contractor to include allowance for disposing of all waste in skips to include removed window frames, glass, debris etc. All waste to be placed in skips daily, no waste to be left on site overnight. Please note no waste to be left in communal areas, all communal areas to be left clear at all times.

Contractors to include allowance for cutting removed window frames into sections to reduce in size before disposing in the onsite skip.

Normal working hours Mon-Fri 8am-4pm

KWL to provide asbestos information and arrange asbestos surveys as necessary.

No contractors are permitted to sub contract this work.

Contractors to include allowance to produce RAMs for us (including COSHH information)

Contractors to include allowance to provide their own signage at site (i.e. operatives at work notice)

Contractors responsible for their own materials on site. Any damages or loss to be recompensed by the contractor.

Contractors to include allowance for supply power on site where necessary

Contractors to include allowance to provide own lighting where required.

All contractors to include allowance for providing their own plant and equipment for transportation of materials, plant and waste on site.

Contractors to include allowance for providing for plant for loading materials onto scaffold platforms and in situ.

All scaffolding contractors must be National Access & Scaffolding Confederation (NASC) Accredited

Contractors to include allowance for all site visits necessary to complete works as specified.

Contractors to include allowance for appropriate representative/s to attend weekly site management meetings.

Contractors responsible to carry out final accurate measures prior to manufacture or supply of any materials/items. All dimensions shown on KWL - Surveys - 2026 - 27 Planned Window Replacement Surveys and Scaffolding Schedule are indicative. Please note no scaffolds will be erected to facilitate final measures.

Contractors to include allowance to cover walking distances and barrow runs to and from the road side necessary to complete works at each property.

Contractors to include allowance for taking pictures prior to works and upon completion of works. All photos to be forwarded electronically to KWL per property address.

Contractors to include allowance for taking pictures prior to works and upon completion of works. All photos to be forwarded electronically to KWL per property address.

Contractors must provide floor protection in all works areas i.e., dust sheets and/or carpet/laminate floor protector.

Contractors must wear shoe covers in any areas within properties without floor protection.

All window installation contractors must be FENSA accredited installers or hold equivalent accreditation.

Contractors to include allowance for taking before and after pictures of completed work and any areas of damage for example stained/torn carpets etc. All photos to be electronically forwarded to KWL upon completion.

Contractors to include allowance to provide HCC tenants with a copy of the manufacturers' day to day usage/cleaning guide per property.

Upon completion at each property contractors must include allowance to provide KWL with a completion pack detailing the works undertaken including but not limited to: before and after photographs, both internally and externally; warranty documentation; and FENSA certification of conformity or equivalent.

Window & Glazing Warranty - Warranties to be a minimum of a 12-month warranty on all products (hardware and moving parts), a 10-year guarantee against fading, warping, corrosion, or joint failure and coverage, and a 5-year warranty for sealed glazing units.

Contractors to include allowance for Glazing for Bathrooms and WCs - Window obscure privacy rating - Rating 5 Satin

Contractors to include allowance for Fire Exit Window Sticker - This sticker is to be placed to the external of the glazing unit on the inside of the property. Sticker to be in the bottom handle corner of the window. Stickers dimensions - 60mm (L) x 35mm (H).

The estimated value on this lot is £2 Million.

All works required to complete the project are as per the included documentation that forms part of this tender bundle.

Complete tender documents can be obtained by e-mailing [email protected]