Adding to existing ETICS: Assessment commission or construction offer?

“There is already insulation on it. Can we simply add some more?” For your façade business, that question creates a different task from an uninsulated wall. The owner wants to develop an already insulated façade. Before your team offers an additional ETICS layer, it needs a professionally usable assessment of the existing system and proposed overall construction. A friendly first contact should therefore lead to a clear next commission: have the existing system assessed first, or develop a scope that has actually been clarified.

This article is for insulation contractors working on projects in Germany. It concerns the distinction between assessment of the existing system and a further renovation offer. It provides no investigation technique, fixing calculations or fire protection instructions. The later example is entirely invented. The question is which service your business offers today, and on what basis, without treating a façade’s age or the owner’s wish as technical approval.

Clarify what the owner actually wants to change

First have the customer describe the goal. Does he want another finish, visible issues assessed or better thermal protection? Those concerns can occur together but are not the same task. A wish for a new colour does not explain why additional insulation should be offered. Equally, concern about existing energy performance cannot be answered simply by choosing a new render texture.

Ask which building areas are concerned. Was the whole house insulated or only one side or a section added later? Use the owner’s actual names and relate them to an elevation. A shared construction year does not prove every surface has the same build-up. Your team should see which area existing documents cover and which has merely been assumed to match because it looks similar.

Also record which work the customer already assumes. “Simply add more” may mean he wishes to retain the old insulation or already expects a particular scope. Take that expectation seriously and explain the next clarification in relation to it. The wish remains a useful starting point. It replaces neither assessment of the old system nor determination of a suitable new construction.

Explain additional insulation as a distinct renovation route

Caparol describes adding insulation to existing ETICS together with a new render system. Its presentation starts with assessment of the existing condition. Only that basic distinction is used here. This is a different service from merely applying a new coat of paint. The responsible specialist must determine which route actually suits the house.

Show the owner which question you are answering now. Is the first issue whether adding insulation can be pursued at all? Or does a specific technical design already exist from which your business can offer its own work? Either can be a sensible next step. It would be misleading, however, to describe an outstanding assessment as a fully determined construction service or promise a complete new build-up without a basis.

Keep other professionally possible outcomes open. Assessment can lead to further investigation, another renovation scope or a specific additional-insulation design. This article does not claim which alternative suits an unknown customer’s house. It helps you name the actual service according to the result. An enquiry about more insulation does not require sales staff to sell that route regardless of the existing system found.

Find old-system documents with a clear surface reference

Ask for available invoices, specifications, system documentation or earlier condition reports. Assign each document to the area it actually describes. An old quotation does not automatically document what was subsequently installed. Identify whether information comes from planning, the customer or a recorded finding. The specialist benefits more from this distinction than a combined note saying “insulation known”.

If only a manufacturer name is available, do not turn it into a fully identified system. Ask specifically for available documents without having the owner open an unknown construction himself. The responsible person determines the necessary inspection. A missing folder can mean further clarification; it proves neither an unsuitable façade nor the feasibility of additional insulation. Keep that information boundary visible in the office.

Pay attention to later changes to the house. Perhaps an extension was treated differently or a damaged area renewed. Initially record those statements with their actual source. A report about an unchanged street elevation does not automatically answer questions about a subsequently repaired gable. Further assessment needs the correct present condition of the area your offer will cover.

Use professional assessment rather than a blanket promise

Section 2.1 of DIBt decision Z-33.49-1505 dated 28 October 2024 requires, for the construction method it regulates, competent assessment and confirmation of matters including wall type and condition, stability, load-bearing capacity and suitability for additional ETICS. This statement expressly remains within that decision’s scope. It confirms neither that a particular customer’s house falls within it nor that it is already suitable.

Give the responsible specialists a specific question about the requested area. What basis is missing before a particular scope can be designed and offered? Which existing documents can actually be assigned to it? Sales staff do not select an investigation method or technical solution from an overview. They organise the assessment needed for the offer. Responsibility and the specific service scope are clarified through your actual business procedures.

Have the outcome show what has been established and what remains unresolved. Receiving a file does not settle the quotation question merely because it exists. The person responsible for your offer must be able to determine the next supported step from it. Where an essential statement is absent, name that gap. A general “looks fine” should not replace the professional outcome required for this particular quotation route.

Offer the assessment service clearly

If assessment is needed first, describe that commission with its actual purpose and scope. What will the commissioned specialist investigate or assess, which documents should be supplied and which decision does the work prepare? Agree the real terms. This article assumes neither a free investigation, a fixed assessment price nor a promised outcome. Your customer should distinguish the service commissioned from construction that might follow later.

Also explain what remains undecided afterwards. A condition report is not an automatically awarded renovation contract. A positive statement about one defined assessment point does not promise all further design and construction services. Describe the actual next quotation route according to the result received. The owner can understand the assessment as a sensible step without assuming an entire new façade is already ordered.

If your business does not offer assessment itself, make the boundary with a separate specialist commission clear. Recommending another provider does not confirm its service. Ask for the information needed for your own later scope and explain the connection. The customer need not perform the technical evaluation himself. He needs a clear statement of what your next quotation work requires.

A fictional case from a colour wish to a separate assessment

In our invented project, an owner wants a lighter finish on her already insulated street façade. She also asks whether more insulation would make sense. She mentions a later repair to the gable for which no document is initially available. Your employee separates the design wish, additional insulation question and repair information. He does not confirm a shared solution for both elevations based on the same visible render colour.

For the rest of the fictional case, assume a specifically described condition-assessment commission is agreed first. The responsible specialist assigns the available documents and assesses the named scope against the actual circumstances. The business does not promise in advance that all old insulation can stay. The owner initially decides on the assessment service. Its actual result determines which further renovation route can be offered.

Suppose a usable design for the street elevation is then available, while a specific question about the repaired gable remains open. Your business develops the clarified own scope and identifies the gable separately. It does not present both areas as equally confirmed. The example claims no particular findings for other buildings and no guaranteed savings. It shows how a limited finding leads to an equally clearly bounded offer.

Connect the new service to the correct existing system

When developing the further offer, name the actual area and its design basis. Which own work is included, which existing surface remains outside it and which addition is handled separately? The customer should recognise whether you are discussing assessment, surface work or a specifically designed additional insulation scope. Those terms must not drift into one another simply because they concern the same house.

If the area or an essential wish changes, refer that specific change for the responsible assessment. New information about the gable does not automatically alter every clarified statement about the street façade. Conversely, the street assessment must not conceal a missing basis for the gable. Keep both assignments in the documents so that the next offer rests on the actual state rather than a general idea of “old ETICS”.

End the discussion with the next real decision. Should the customer commission assessment first or decide on a clarified construction scope? Explain which outcome follows and what remains separate. Your team gains an actionable task and the owner a clear renovation route. Your business’s strength lies in offering the right service on an appropriate basis rather than treating every enquiry as a finished additional-insulation project.

If the owner asks for a particular effect on heating costs, that question receives its own responsible clarification. The described condition-assessment commission does not answer it automatically. Record which statement is actually needed before sales promises the corresponding calculation or service.

Handle new façade enquiries in line with your services

Façade insulation enquiries from webRichtung open contact with owners looking for a specialist. Existing ETICS, complete condition records or confirmed suitability for additional insulation are not promised enquiry details. You clarify those personally. Register on the industry page; in webRichtung Customer choose area, delivery type and monthly cap and view the current price before ordering. The cap guarantees no delivery quantity. Your own specialist discussion leads to an appropriately described next offer.