Spray-On Insulation Foam Retrofitting Building Exteriors

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Solution Overview

Problem

Existing methods for retrofitting building exteriors with insulation and cladding are costly, labor-intensive, and require time-consuming verification of fastener part attachment, which burdens installers and disrupts building occupancy.

Innovation Solution

A method involving the placement of rigid panel insulation members, application of spray-on polyurethane insulation foam, and application of spray-on cladding to create a continuous and monolithic cladding exterior construction, eliminating the need for fastener part attachment and reducing labor and material costs.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If fastener part attachment of furring strips directly to each vertical stud is used, then siding attachment requirements are met, but installation cost and time increase significantly

Engineering Contradiction:

Improvesiding attachment complianceVSAvoidinstallation speed

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent removes the furring strip component from the traditional siding attachment system. Instead of attaching furring strips to each vertical stud, the spray-on insulation foam directly adheres to the structural sheathing, eliminating the intermediate furring strip layer and its associated fasteners, thereby simplifying the system while maintaining code compliance

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The spray-on insulation foam serves as a new intermediary material between the structural sheathing and the siding. This foam provides both insulation and a bonding surface for siding attachment, replacing the traditional furring strip intermediary and consolidating multiple functions into a single material layer

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If fastener part attachment verification is performed, then code compliance is ensured, but installation time and labor burden increase

Engineering Contradiction:

Improvecode complianceVSAvoidverification time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The spray-on insulation foam system is self-verifying in that the continuous monolithic layer inherently demonstrates proper installation without requiring additional verification steps. The material's properties (adhesion, continuity, coverage) provide built-in evidence of compliance, eliminating the need for installer verification of fastener attachment

Inventive Principle:

Principle #25Self-service

3Use of energy by stationary object

If traditional exterior insulation installation is used, then insulation is provided, but the process is costly and labor-intensive

Engineering Contradiction:

Improveinsulation performanceVSAvoidinstallation complexity

Core Design Contradiction:

Use of energy by stationary objectVSEase of manufacture

Solution Approach 1:

The patent combines insulation installation with surface preparation for siding attachment in a single spray-on foam application process. This merging of functions eliminates separate installation steps, reduces material layers, and simplifies the overall manufacturing and installation process while maintaining insulation performance

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The patent changes the physical state and application method of insulation from rigid panels requiring mechanical attachment to spray-on foam that cures in place. This parameter change from solid panel to liquid-to-solid transformation simplifies installation, eliminates fastening requirements, and creates a seamless insulation layer

Inventive Principle:

Principle #35Parameter changes

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method simplifies and accelerates the retrofitting process, minimizes labor and material costs, and provides enhanced structural integrity, increased insulative performance, and improved weather resistance and durability for building exteriors.

Implementation Method 1

application of spray-on polyurethane insulation foam

Methodology Applied

Scientific EffectFoam expansion: Foam

Implementation Method 2

The sprayed-on cladding cures in-place over the already-placed rigid panel insulation members and over the already sprayed-on polyurethane insulation foam

Methodology Applied

Scientific EffectCuring: Chemical Bonding

Data Source

PatentUS20250043566A1Method of Retrofitting Building Exteriors With Insulation And Cladding Construction

Publication Date: 2025.02.06 UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION

AI summary

A method of retrofitting a building exterior with an insulation and cladding construction has a multitude of steps. One step involves placing rigid panel insulation members to certain areas of the building exterior. A subsequent step involves spraying polyurethane insulation foam to certain areas of the building exterior. And yet another step involves spraying cladding over the rigid panel insulation members placed at the building exterior, and involves spraying the cladding over the previously-sprayed polyurethane insulation foam. The sprayed cladding cures in-place and, once cured, constitutes a continuous and monolithic cladding exterior construction over the placed rigid panel insulation members and over the sprayed polyurethane insulation foam.