Quick Answer
Envelope thermal performance are Ace’s structured engagement of stamped drawings, FGIA/AAMA-accredited testing, and construction oversight, delivered by a single senior team. Fees are typically fixed by design phase, deliverables are signed, and every field or lab report is turned around within a week.
Key Takeaways
- Envelope thermal performance at Ace covers thermal bridging analysis, building envelope energy modeling, continuous insulation design, and Title 24 envelope compliance — delivered by one senior team, not handed off across three vendors.
- Deliverables are stamped under Ace’s license, not marked-up under an architect’s license — the same accountability model a structural engineer provides.
- A design-phase correction costs about one-tenth of a construction-phase fix and roughly one-hundredth of a post-occupancy repair.
- Ace serves commercial, industrial, multifamily, mixed-use, and institutional projects in the $2M–$100M range, primarily in California, with active coverage across Arizona, Nevada, Idaho, Oregon, Utah, and Washington.
- Fees for envelope thermal performance are typically fixed by design phase; field and test reports turn around within one week of the site visit.
01 — OverviewWhat Thermal Performance Actually Covers
Envelope thermal performance at Ace Building Envelope Design are the structured engagement of design, testing, and field verification for a building’s envelope. Ace provides envelope thermal performance across commercial, industrial, multifamily, mixed-use, and institutional projects in the $2M–$100M range, and — critically — is one of a small number of Western U.S. firms that acts as Architect of Record for the waterproofing scope on new construction and remediation, which changes what a set of drawings actually contains and who stands behind them. This pillar is part of Ace’s complete guide to envelope services, covering design, testing, construction administration, and forensic investigation.
Why this service is treated as its own engagement
Envelope work is where general design and general contracting most often produce gaps. Thermal Performance exists as a distinct engagement because the underlying details — waterproofing terminations, air-barrier continuity, fenestration transitions — need someone accountable for them at drawing scale, in the lab, or in the field, before the assembly is closed. That accountability is what Ace provides.
Where thermal performance sits in the project lifecycle
Ace enters thermal performance engagements at whatever phase the project is in — schematic, design development, construction, remediation, or post-occupancy investigation. The engagement mode adapts; the discipline of stamped or signed deliverables, accredited testing, and one-week report turnaround does not.
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Services
02Thermal Bridging Analysis
Thermal bridging analysis is one of the specific capabilities inside Ace’s envelope thermal performance. It comes up on projects where the design set has to hold up under construction-defect scrutiny — and it is handled by the same senior team that delivers the rest of the engagement. There is no handoff to a specialist third party for this component.
What that looks like in practice: thermal bridging analysis is scope-appropriate turnaround at engagement start against the specific project’s constraints, priced as part of the fixed design-phase fee (not billed as an add), and delivered on the same one-week report cadence as the rest of Ace’s field and lab work. The deliverable is signed under Ace’s professional license where design is involved, or attested to under Ace’s FGIA/AAMA accreditation where field or lab testing is involved.
Where thermal bridging analysis typically fits in a project
Thermal bridging analysis usually enters the project timeline when the design set is being detailed. Ace’s approach to thermal bridging analysis is documented in the engagement’s basis of design or scope memo, so the client has a written definition of what will be delivered before work begins.
03The Problem, the Solution, and the Result
Envelope failures on this kind of work share a pattern. The problem is almost always under-drawn detail or under-scope-appropriate turnaround diagnosis at the design stage, and the resolution — after the failure appears — is disproportionately expensive. Ace’s envelope thermal performance is built to interrupt that pattern one stage earlier, where correction is still cost-effective.
Under-drawn, under-tested, under-owned
An envelope detail is drawn at half a sheet, tested against a proxy specification, and priced by three subs with three different assumptions. Whichever assumption wins the bid is the one that gets built.
Stamped, tested, accountable
Ace’s envelope thermal performance resolves the detail to installation-scale specificity, tests against the actual assembly on the actual project, and takes accountability under a single signed deliverable.
Cleaner bids, cleaner installs, fewer claims
Bid variance collapses. Field RFIs drop. The envelope conditions that would have produced a warranty claim in year three are resolved in year zero.
04Building Envelope Energy Modeling
Building envelope energy modeling is one of the specific capabilities inside Ace’s envelope thermal performance. It comes up on projects where the developer is optimizing for a tight bid spread — and it is handled by the same senior team that delivers the rest of the engagement. There is no handoff to a specialist third party for this component.
What that looks like in practice: building envelope energy modeling is scope-appropriate turnaround at engagement start against the specific project’s constraints, priced as part of the fixed design-phase fee (not billed as an add), and delivered on the same one-week report cadence as the rest of Ace’s field and lab work. The deliverable is signed under Ace’s professional license where design is involved, or attested to under Ace’s FGIA/AAMA accreditation where field or lab testing is involved.
Where building envelope energy modeling typically fits in a project
Building envelope energy modeling usually enters the project timeline when the bid documents are being prepared. Ace’s approach to building envelope energy modeling is documented in the engagement’s basis of design or scope memo, so the client has a written definition of what will be delivered before work begins.
05The Engagement Process, Step by Step
Thermal Performance is not a black box. Ace runs a repeatable three-stage process with defined deliverables at each stage. What follows is the standard cadence.
Scoping & Basis
Ace produces a scope memo or basis-of-design document that names every deliverable, the code path, and the interface with adjacent trades. This is the document the client, design team, and (where applicable) code official all sign off on before work begins.
Signed Deliverables
Ace produces the stamped or signed deliverables: design drawings and specifications under Ace’s license (where design is involved), or test and inspection reports under Ace’s FGIA/AAMA accreditation (where testing is involved). Every report is turned around within a week of the field or lab visit.
Coordination & Closeout
Ace responds to plan-check, subcontractor questions, and change proposals; supports value-engineering; and produces the closeout record. On field engagements this stage compresses; the deliverable cadence does not.
06Continuous Insulation Design
Continuous insulation design is one of the specific capabilities inside Ace’s envelope thermal performance. It comes up on projects where the architect is looking to shrink professional-liability exposure on the envelope scope — and it is handled by the same senior team that delivers the rest of the engagement. There is no handoff to a specialist third party for this component.
What that looks like in practice: continuous insulation design is scope-appropriate turnaround at engagement start against the specific project’s constraints, priced as part of the fixed design-phase fee (not billed as an add), and delivered on the same one-week report cadence as the rest of Ace’s field and lab work. The deliverable is signed under Ace’s professional license where design is involved, or attested to under Ace’s FGIA/AAMA accreditation where field or lab testing is involved.
Where continuous insulation design typically fits in a project
Continuous insulation design usually enters the project timeline when construction is in progress and the field needs a stamped clarification. Ace’s approach to continuous insulation design is documented in the engagement’s basis of design or scope memo, so the client has a written definition of what will be delivered before work begins.
| Criterion | Ace approach | Peer-review model | GC-directed model |
|---|---|---|---|
| Deliverable format | Stamped/signed by Ace | Marked-up under architect’s stamp | Field-directed, no stamp |
| Accountability | Ace | Project architect | Project architect + GC |
| Speed at plan check | Fast (stamped response) | Moderate (memo response) | Slow (rework common) |
| Best fit | Complex assemblies, high defect exposure | Familiar building type, experienced architect | Simple typology, small project |
07Title 24 Envelope Compliance
Title 24 envelope compliance is one of the specific capabilities inside Ace’s envelope thermal performance. It comes up on projects where the schedule is compressed and the field work needs a single accountable party — and it is handled by the same senior team that delivers the rest of the engagement. There is no handoff to a specialist third party for this component.
What that looks like in practice: Title 24 envelope compliance is scope-appropriate turnaround at engagement start against the specific project’s constraints, priced as part of the fixed design-phase fee (not billed as an add), and delivered on the same one-week report cadence as the rest of Ace’s field and lab work. The deliverable is signed under Ace’s professional license where design is involved, or attested to under Ace’s FGIA/AAMA accreditation where field or lab testing is involved.
Where Title 24 envelope compliance typically fits in a project
Title 24 envelope compliance usually enters the project timeline when the project is closing out and the warranty documentation is being assembled. Ace’s approach to Title 24 envelope compliance is documented in the engagement’s basis of design or scope memo, so the client has a written definition of what will be delivered before work begins.
08Who Hires Ace for This Service
Ace’s envelope thermal performance is engaged by four buyer types, each with a different reason to call. The framing below is the shortest useful map of how the same practice lands with each role.
Developers & owner-builders
Developers hire Ace to reduce defect-liability exposure and to tighten envelope bid variance. See developers & owner-builders.
Architects & design teams
Architects engage Ace as a design peer — a firm that stamps the envelope scope the architect chooses to hand off. See architects & design teams.
General contractors & construction managers
GCs and CMs engage Ace to keep the schedule intact when an envelope detail has to be resolved in the field. See general contractors.
Institutional owners & capital-program teams
Hospitals, universities, K–12 districts, and government agencies engage Ace for envelope work across recurring capital programs. See higher education, healthcare, and K-12 schools.
The Bottom Line
Envelope thermal performance is the discipline of getting envelope work right at the earliest and cheapest stage of a project. Ace is one of a small number of Western U.S. firms that acts as Architect of Record for the waterproofing scope on new construction and remediation — which is the single move that most reduces envelope defect exposure at that stage.
Frequently Asked Questions
What are envelope thermal performance?
Envelope thermal performance are Ace’s structured engagement of stamped drawings, FGIA/AAMA-accredited testing, and construction oversight, delivered by a single senior team. Fees are typically fixed by design phase, deliverables are signed, and every field or lab report is turned around within a week.
How does Ace approach thermal bridging analysis?
Ace’s approach to thermal bridging analysis is documented in a scope memo at engagement start, delivered by one senior team, and closed out with a signed deliverable. Fees are typically fixed by design phase, not hourly. Every field or lab report turns around within a week of the site visit.
What is included in Ace’s building envelope energy modeling?
A complete building envelope energy modeling engagement at Ace covers the scope-of-work definition, the deliverable format (stamped drawings, signed reports, or accredited test documentation), the delivery schedule, and the closeout package. Sub-scopes vary by project; the engagement structure does not.
When should we bring Ace in for continuous insulation design?
The earliest engagement produces the largest cost savings — ideally at basis-of-design on new construction, or immediately on discovery of a symptom on existing buildings. That said, Ace is regularly brought in at plan check, during construction, or after occupancy to resolve a specific problem.
How much does envelope thermal performance cost?
Fees for envelope thermal performance are typically fixed by scope or design phase rather than hourly, which lets the client budget the envelope engagement against the rest of the project. Fees scale with project size and complexity. As a general rule, the engagement fee is a small fraction of the cost of the first field problem it prevents.
How long does envelope thermal performance take?
Ace’s typical engagement runs about ten to twelve weeks on new construction and compresses to about six weeks on remediation. Every stage closes with a signed deliverable, so a client can hold work at any gate without carrying open scope.
Who signs the envelope thermal performance deliverables?
Ace’s deliverables are stamped under Ace’s design professional license (where design is involved) or attested to under Ace’s FGIA/AAMA accreditation (where field or lab testing is involved). Deliverables are not marked up under someone else’s license.
Does Ace serve projects in Thermal Performance?
Yes — Ace serves this state directly from four offices across the Western U.S. (Concord and Newport Beach and San Diego, California, and Nampa, Idaho). Ace’s Western-U.S. practice covers California primarily, with selective coverage across Arizona, Nevada, Idaho, Oregon, Utah, and Washington.
How does Ace handle Title 24 envelope compliance?
Ace addresses Title 24 envelope compliance as part of its structured envelope thermal performance engagement — scope-appropriate turnaround at engagement start, delivered by the same senior team, closed out with a signed deliverable. Title 24 envelope compliance is not treated as an add-on, and it is not handed to a specialist third party.
What if a field condition can’t be built as designed?
Ace resolves field-condition issues within a week of the site observation. Because Ace’s design of record is stamped under Ace’s own license (where Ace is Architect of Record), Ace has the authority to issue a stamped clarification or revision directly — not routed through the project architect for a change instrument.
How We Built This Page
This guide was written by John Harris, President of Ace Building Envelope Design, and reviewed for technical accuracy by Conor Meyers, CEO. It draws on Ace’s active portfolio across the Western U.S., on published construction-defect liability research, on FGIA/AAMA field-testing standards, and on the National Institute of Building Sciences’ Whole Building Design Guide.
Last reviewed July 2026.
References
- Fenestration & Glazing Industry Alliance (FGIA). Field-test methods, accreditation program documentation, and industry standards. https://fgiaonline.org/
- National Institute of Building Sciences — Whole Building Design Guide. Water and vapor migration guidance for building envelopes. https://www.wbdg.org/design-objectives/functional-operational/water-vapor-migration
- Terner Center for Housing Innovation, UC Berkeley. Construction defect liability research. https://ternercenter.berkeley.edu/research-and-policy/construction-defect-liability-california/