Retrofit screed guide: Selecting Gypsol TS‑15, TimBRE & Rapide for complex projects
Refurbishment and retrofit projects increasingly dominate the construction landscape. From residential upgrades and commercial conversions to education, healthcare and mixed‑use developments, these projects present a very different set of challenges compared to new‑build construction.
Restricted floor depths, variable substrates, acoustic requirements and tight programmes all place pressure on floor construction. Selecting the correct screed solution is essential – not just for performance, but for programme certainty and long‑term reliability.
LKAB Minerals’ Gypsol screed portfolio offers specialist solutions designed specifically for complex retrofit environments. Gypsol TS‑15, Gypsol TimBRE and Gypsol Rapide each address distinct challenges, giving designers and contractors confidence even in the most constrained conditions.
The reality of retrofit constraints
Retrofit projects must often work around existing structures and services. Common challenges include:
- Limited floor build‑up height
- Irregular or legacy substrates
- Timber floors requiring acoustic and movement management
- Live buildings with restricted access and disruption windows
- Accelerated handover timelines
Traditional sand-cement screeds frequently struggle in these environments, requiring excessive thickness, extended drying times or complex detailing that increases risk.
Gypsol TS‑15: Performance in minimal depths
Where floor height is at a premium, Gypsol TS‑15 thin section screed provides a high‑performance solution.
Installed at depths as low as 15mm when bonded, Gypsol TS‑15 delivers:
- High compressive and flexural strength
- Excellent surface regularity for floor finishes
- Reduced dead load on existing structures
This makes it ideal for:
- Commercial refurbishments
- Residential apartment upgrades
- Upper floors where structural capacity is limited
Pumpable application ensures rapid installation, uniform coverage and reduced manual handling – key considerations in restricted retrofit environments.
Gypsol TimBRE: A solution for timber floors
Timber substrates are common in refurbishment projects but present unique technical challenges. Movement, deflection and acoustic performance must all be managed carefully to avoid future issues.
Gypsol TimBRE is engineered specifically for use over timber floors, offering:
- Enhanced flexural strength to accommodate movement
- Reduced thickness compared to traditional build‑ups
- Improved acoustic performance without excessive layers
By reducing the need for complex systems, Gypsol TimBRE simplifies detailing and supports faster installation – particularly valuable in residential refurbishments and mixed‑use developments.
Gypsol Rapide: Certainty for fast‑track programmes
Time is often the most critical factor in retrofit projects. Gypsol Rapide is designed to support fast‑track delivery without compromising quality.
Key benefits include:
- Walkable in a matter of hours
- Significantly reduced drying times
- Earlier installation of floor coverings
- Predictable strength development
This makes Gypsol Rapide ideal for:
- Phased refurbishments
- Live environments requiring rapid area turnover
- Commercial spaces with strict opening deadlines
Speed, in this instance, enhances quality rather than compromising it, helping reduce programme risk and contractor exposure.
Underfloor heating compatibility
Many retrofit projects include energy‑efficiency upgrades, with underfloor heating becoming increasingly popular. All three Gypsol solutions are fully compatible, offering:
- Excellent thermal conductivity
- Even heat distribution
- Faster system response times
This enhances occupant comfort while supporting modern energy performance standards.
Acoustic and finish performance
Retrofit floors must often meet stringent acoustic requirements, particularly in residential and commercial conversions. Gypsol screeds contribute to:
- Reduced impact sound transmission
- Smooth, SR‑class finishes
- Compatibility with a wide range of floor coverings
Precision placement ensures consistent results, reducing remedial work and handover delays.
Sustainability in refurbishment projects
Refurbishment is inherently more sustainable than new‑build construction, but material selection still matters. Gypsol screeds use calcium sulphate technology, offering:
- Lower embodied carbon than traditional cement screeds
- Reduced waste through pumpable installation
- Optimised thickness to avoid over‑specification
LKAB Minerals’ approach supports sustainable renovation without sacrificing technical performance.
Making the right screed choice
Successful retrofit screed selection depends on understanding:
- Substrate characteristics
- Structural limitations
- Programme requirements
- Thermal and acoustic performance needs
By offering targeted screed solutions rather than a one‑size‑fits‑all approach, Gypsol enables designers and contractors to reduce risk and improve outcomes.
Retrofit with confidence
Complex projects demand certainty. With Gypsol TS‑15, TimBRE and Rapide, retrofit teams gain access to screeds engineered for real‑world challenges – delivering strength in thin sections, performance on timber floors and speed when programmes are tight.
With the right screed solution, refurbishment projects can move forward efficiently, sustainably and with confidence. Want to see more examples of how LKAB Minerals is shaping responsible construction and delivering innovative low carbon solutions? Follow us on LinkedIn for the latest product updates, insights, and success stories.
