RoofLogic  Recover

Rooflogic Recover encompasses a range of practical, innovative and cost effective solutions for the overlay of existing roof and building substrates. Rooflogic Recover solutions can be used to overlay existing metal roofs as well as existing concrete and plywood roof subtrates.  The available solutions are almost limitless and can be adapted to the specific challenges and requirements of your re-roofing project.

Benefits/Advantages

Retain your existing substrate

Use the existing substrate as the basis for the Recover system.  Existing metal roof cladding, plywood and concrete can all be utilised as a Recover substrate.

Non-Invasive

Unlike most re-roof projects a Recover solution does not require the building occupants or building activity to be relocated.

Condensation Risk

Recover systems are designed and installed to ensure that condensation risk over the life of the system is managed.

Re-pitch the roof

As part of the Recover solution a roof that has nominal or insufficient fall can be re-pitched.  The most economical and non-invasive way to achieve this is with tapered rigid insulation which can improve falls to meet new code requirements.

Engineered Solution

Rooflogic can carry out a thorough roof assessment to ensure the Recover solution is designed to meet all the structural performance requirements of the project. 

Detailing

Recover systems enable a roof to be detailed in a manner that enhances the durability and long term weather-tightness of critical roof junctions.

Thermal Performance

Recover solutions can incorporate additional insulation layers to enhance thermal performance.

Design Flexibility

Rooflogic Recover systems provide a solution that offers complete flexibility.  Rooflogic have been involved in numerous Recover projects where the Recover solution has provided a simple, cost-effective, long-term solution where a traditional re-roof option would have been problematic.  See below some examples of Recover assemblies that have been installed throughout New Zealand.

Existing Trough Section Roofing

Install the Rooflogic Recover system over existing metal trough section roofing.  This roofing material was traditionally installed at low pitch.  Low pitch, damage, poor detailing, complex junctions all contribute to these roofs being compromised in respect to weather-tightness.  Often these roofs are the perfect candidate for a Recover solution.  Rooflogic will examine the existing roof and develop a structural scheme that allows for a robust, warrantable Recover system to be installed.

1. Install high density profile fillers, roof board and Fibertite membrane to provide a simple, cost-effective Recover solution. 

2. Add a layer of continuous PIR insulation to further enhance thermal performance.

3. To increase roof fall tapered high density profile fillers can be installed.

4. The system can also be installed with Derbigum, a two layer modified bitumen membrane.

Existing Concrete Substrates

The Rooflogic Recover system can be installed over existing concrete substrates.  The benefit of the Recover system is that existing membranes can be left insitu and can often be re-purposed as the vapour control layer where the Recover includes a new insulation layer.

In our most basic concrete overlay RL Roof Board HD is installed over the existing membrane and mechanically attached to substrate.  The board fixing pattern is designed by Rooflogic’s engineer and takes account of the project wind loads – this effectively takes the adhesive bond of the existing membrane to substrate out of the equation and provides certainty in respect to structural performance of the system

1. Install roof board mechanically attached to substrate with Fibertite membraneadhered to roof baord to provide a simple, cost-effective Recover solution. 

2. Add a layer of continuous PIR insulation to further enhance thermal performance.

3. To increase roof fall tapered high density profile fillers can be installed.

4. The system can also be installed with Derbigum, a two layer modified bitumen membrane.

Existing Timber Substrates

The Rooflogic Recover system can be installed over existing timber substrates.  The benefit of the Recover system is that existing membranes can be left insitu and can often be re-purposed as the vapour control layer where the Recover includes a new insulation layer.

In our most basic timber overlay RL Roof Board HD is installed over the existing membrane and mechanically attached to substrate.  The board fixing pattern is designed by Rooflogic’s engineer and takes account of the project wind loads – this effectively takes the adhesive bond of the existing membrane to substrate out of the equation and provides certainty in respect to structural performance of the system

1. Basic overlay solution incorporating roof board mechanically attached to timber substrate.

2. Basic overlay solution enhanced with a layer of RL PIR Board to improve system thermal performance.  Roof Board and PIR Board mechanically attached to timber substrate.

3. If the existing timber deck does not have adequate fall the most economical (and light weight) solution to this is to incorporate a layer of rigid, tapered insulation. 

4. All systems can be installed with either Fibertite single ply membrane or, as shown above, two layer Derbigum modified bitumen membrane.

Recover  Projects...

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39 Hautonga Street, Petone, Wellington

Ph. 04 475 7663

Rooflogic Limited