CD 534: Chamber Tops and Gully Tops for Road Drainage and Services, now at version 0.2.0. is here Find out more
Universal ironwork frame levelling kit
ScrewLift™
ScrewLift is an adjustable frame levelling system, enabling micro adjustments to match ductile iron manhole covers and gully grating frames with their surrounds. It enables high-quality, consistent installations that resist early-life failure, extending the life of ironwork.
Simple but highly effective, ScrewLift provides a fast, safe and repeatable method of levelling frames to the finished road surface while ensuring a minimum 15mm bedding depth. It’s ideal for both retrofit and factory-fitted applications, helping installers achieve accuracy and compliance across every site.
ScrewLift makes levelling ironwork simpler, quicker, and safer on site. By removing the need for manual lifting and micro-adjustments, ScrewLift helps to ensure installations are completed right first time, protecting both operators and the finished surface.
With traditional levelling, each adjustment can mean minutes lost and repeated checks to reach the right height. ScrewLift removes that inefficiency. Its threaded lift system allows smooth, incremental adjustments with complete control. No need to lift, rebed, or re-check. In just a few turns, ironwork can be perfectly levelled to the surface, saving valuable time on every installation and keeping you on track.
- Maintains a 15mm minimum bedding thickness beneath the flange, this ensures a minimum bedding thickness to maintain structural integrity and durability.
- ScrewLift levelling screws can be adjusted from the top side of the frame using simple tools for easy, accurate and fine alignment.
- Achieve perfect adjustments to match the surrounding road surface and camber in less time.
- Simple to install with a firm push (or mallet) in the four insert points positioned near each frame corner, for even load distribution.
- Prevents early life failure caused by poor bedding depth or frame movement.
- Ensure a full and continuous bond between the frame and chamber, improve whole-life performance of ironwork installations.
- Forms a key part of the Wrekin ironwork warranty.
- Simplifies compliance with CD 534 and BS EN 124 installation guidance.
Products
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Stock code |
Description |
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My Wrekin |
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| FS/SCREWLIFT |
ScrewLift universal ironwork frame levelling kit (maintains a 15mm minimum bedding thickness beneath the flange)
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FS/SCREWLIFT
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Characteristic
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Value |
| Description |
ScrewLift universal ironwork frame levelling kit (maintains a 15mm minimum bedding thickness beneath the flange)
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| My Wrekin |
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| Datasheet |
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ScrewLift in Numbers: Efficiency You Can Measure
ScrewLift takes the strain out of installation by removing heavy lifting and multiple adjustments, delivering consistent precision and protecting both operators and surfaces. Explore the stats below to see the time and cost savings you can achieve.
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reinstatement cost savings per installation.
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Up to £5000
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in savings on chamber repairs with ScrewLift.
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Up to £15,000
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bedding mortar depth guaranteed.
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15mm
Key benefits
ScrewLift provides specifiers, contractors, and asset owners with a consistent method for achieving long-term performance from every ironwork installation.
Consistent bedding depth
Guarantees a minimum 15 mm bedding layer for reliable, structurally sound installations. Prevents early-life failure and reinstatement costs of £1k–£5k per unit.
Accurate levelling and camber control
Easily adjusted by hand, hex key, drill or socket to match road camber. Prevents frame misalignment and impact damage, avoiding up to £15k in chamber repairs.
No makeshift packing
Removes the need for shims, debris, and other non-compliant materials, ensuring durable, consistent bedding.
Operator safety built in
Protects hands from being caught beneath heavy ironwork and reduces time spent exposed to traffic.
Precision without rework
Smooth, controlled screw adjustment means perfect levelling in seconds, no lifting, re-bedding, or micro-adjustments. Faster, safer installations that stay on level and on schedule.
How does ScrewLift work
crewLift provides a precise mechanical interface between the chamber and frame, ensuring the correct height and orientation before bedding and surfacing.
- Insert ScrewLift base units - For retrofit, insert each ScrewLift from the underside of the frame until it is firmly in place. Factory-fitted frames arrive with base units and levelling screws pre-installed.
- Position the frame - Place the frame over the chamber using long-handled lifting keys. Ensure the flange is fully supported with no bridging or voids.
- Level the frame - Adjust each levelling screw by hand, Allen key, socket or spanner until the frame sits flush with the surrounding surface.
- Check alignment - Use a straight edge or string line to verify crossfall and camber. Fine-tune as required.
- Bed and encapsulate - Apply UniPak bedding mortar (or suitable CD 534 compliant bedding mortar) to achieve a full, continuous bond between the frame and chamber. Pour flowable materials to the frame’s fill line indicator for complete encapsulation.
Achieve more with ScrewLift
How can ScrewLift benefit me?
ScrewLift providers specifiers, contractors and asset owners with a consistent method for achieving long-term performance from every ironwork installation.
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Specifiers
ScrewLift supports compliance with BS EN 124 and CD 534 installation standards while delivering whole-life value by reducing maintenance and early failure rates.
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Contractors
ScrewLift saves time on site by removing the need for packing materials or rework. Levelling is a simple and safe process, that reduces manual handling risks.
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Asset owners
Reduce the future reinstatement and maintenance costs across your network. ScrewLift improves the safety and reliability for both your operatives and your network. You can achieve a greater operational life of road infrastructure.
Compatible ranges
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Unite Manhole Covers
The most robust manhole cover range, packed full of features which combine to give Unite the longest life and lowest whole life cost available.
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Unite D400 Gully Grates
Our premium Unite D400 gully grate combines new technology with proven features to deliver a super long-life and the lowest whole-life cost of any D400 gully grate.
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Highway Manhole Covers
Highway is the most comprehensive range on the market with a huge variety of shapes, sizes and options, including our HaloHinge covers, which enable single person lifting.
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Highway Gully Grates
The Highway range offers our most extensive variety of gully grates, including three flange, four flange and V gully grates.
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Tristar D400 Manhole Covers
Tristar D400 ductile iron access covers fully comply with BS EN 124:2015 and carry the BSI Kitemark. Tristar contains innovative design features that mark it out from the competition.
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Tristar Gully Grates
The Tristar range of gully grates are our most competitive range to date. Our straight bar hinged gully grates address many of the most common issues related to cost-effective products.
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SafeSeal Manhole Covers
A15, B125 and C250 manhole covers which all incorporate a single labyrinth seal, helping to prevent odour escapes and water ingress.
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Cargo F900 Manhole Covers
Cargo access covers are engineered to endure immense loads, providing a reliable solution for shipping, aviation, and industrial sectors with durability, strength, and dependability.
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Hercules D400 Manhole Covers
Hercules offers a cost-effective alternative to large fabricated steel solutions for applications requiring ductile iron's strength in a 1.2m x 1.2m size.
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Vault D400 Manhole Covers
Exceeds the requirements of LPS 1175 SR3, providing security for valuable communication assets used in the development of smart motorways and the control of matrix signs.
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Force D400 Manhole Covers
Round, hinged, robust manhole covers, utilising our unique anti-debris technology to ensure a simple and easy lift every time.
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Pulse
Pulse delivers exceptional strength, stability and long-term performance for demanding carriageway environments. Developed for stringent telecoms requirements and refined for highways, it provides whole-life value and helps reduce carbon across busy networks.
More available accessories
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Clicklift
Provides housing developers and contractors with huge savings in terms of time, money and hassle. Allowing whole estates to have their manhole covers raised to the final surfacing level, in as little as a few hours.
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UniPak®
UniPak is A BBA HAPAS approved ironwork rapid-set bedding mortar that is designed to reduce risk of bedding failure, one of the main factors contributing to premature failure of chamber tops.
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GritBlocker
An anti-blockage keyway insert that simply fits into the manhole cover keyway, reducing the risk of debris from blocking the opening while allowing a lifting key to be inserted.
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H2GO Gully chute connector
The H2GO gully chute connector is designed to fix below a grating or kerb type gully unit with a primary catchment chamber and spigot outlet for onward pipe connection. These are ideal where gully grates are offset to gully pots, or where direct surface run off is required.
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Flood and odour control plate
Design to be fitted to our ductile iron access cover and frames, the flood and odour control plate provides resistance to egress of chamber odours and flood water ingress.
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Reducer ring
Provide a second line of defence against chambers being accessed by unauthorised people or potential falls if accidentally left uncovered.
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Lifting keys
Our range of lifting keys provides safe and secure lifting to our entire range of access covers, including ductile iron, steel and aluminium.
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Seal plates
Seal plates are a retrofit solution for Unite manhole covers, designed to prevent or reduce surface water runoff entering the chamber (compatible with Unite codes ending in/KUE).
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Chamber access
From robust chamber step irons suitable for concrete and brickwork applications to innovative composite modular ladders that offer flexibility and longevity.
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Armadillo
Protector shells and SiltShield will protect your ironwork during the construction phase, ensuring manhole covers and gully grating are ready to start their service life in as new condition.
Contact us
Whether you are looking for live project support, or are in the initial stages of specification, we are always on hand and happy to help.
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