In-Situ Running Render Top Coat
In-Situ Running Render Top Coat is a super-fine Natural Cement finish coat developed specifically for the in-situ running and restoration of external mouldings. Blending Natural Cement, fine silica sand, and natural earth pigments, it produces a crisp, heritage-toned finish designed to replicate the appearance of traditional Roman Cement façades.
Formulated for the reproduction and repair of cornices, mouldings, string courses, and other decorative architectural features, the Top Coat provides excellent arris retention, low shrinkage, and a refined finish suitable for both restoration and new decorative work. It is designed to be used over the In-Situ Running Render Muffle Coat as part of the complete Running Render system.
Technical Data
| Property | Value |
|---|---|
| Product Type | Fine Decorative Top Coat |
| Binder | Natural Cement |
| Aggregate | Fine Silica Sand |
| Pigmentation | Natural Earth Pigments |
| Colour | Heritage Roman Cement Brown |
| Application | Internal & External |
| Packaging | 25kg Bags |
| Yield | Approx. 14–14.5 Litres per Bag |
| Typical Use | Final Coat for In-Situ Running & Decorative Repairs |
Key Benefits
Designed for Decorative Mouldings
Suitable for:
- Cornices
- String Courses
- Architraves
- Window Surrounds
- Decorative Façade Features
- Roman Cement Restoration
Super-Fine Finish
The fine grading allows sharp detail reproduction, clean arrises, and a refined surface finish.
Rapid Setting
The Natural Cement binder allows efficient in-situ running and same-day working sequences.
Low Shrinkage
Designed to minimise shrinkage, helping maintain profile accuracy and reduce edge pull-back.
Heritage-Matched Colour
Through-body natural earth pigments replicate the warm brown tones associated with traditional Roman Cement façades.
Portland Cement Free
Manufactured using a natural cement binder in keeping with traditional Roman Cement restoration techniques.
Typical Applications
- In-situ running mouldings
- Cornice restoration
- Decorative façade repairs
- String course repairs
- Roman Cement restoration
- Architectural ornament repair
- Heritage conservation projects
- Decorative plaster mouldings
Why Use In-Situ Running Render Top Coat?
Traditional Roman Cement mouldings require a fine finish coat capable of reproducing sharp details while matching the colour and appearance of the original work.
In-Situ Running Render Top Coat has been developed specifically for this purpose, providing a fine-grained, rapid-setting finish that works seamlessly with the Running Render system. Its low shrinkage and excellent arris retention make it particularly suitable for decorative restoration work where profile accuracy is essential.
Installation Overview
1. Background Preparation
Apply over suitably prepared In-Situ Running Render Muffle Coat or other compatible backgrounds.
2. Mixing
Mix with clean water to achieve a workable consistency suitable for running moulds and decorative profiles.
3. Application
Apply as the final face coat during the running process to achieve the desired profile and finish.
4. Finishing
Work the material through the running mould to produce crisp details and a smooth decorative surface.
5. Storage
Store dry and protected from moisture prior to use.
Important: In-Situ Running Render Top Coat is a very fast-setting material. The manufacturer recommends using it in conjunction with Tempo retarder to achieve a practical working time and controlled set.
