Behind The Wall · A Field Guide · No. I · MMXXVI
You may not know where your main shutoff is, what your meter is telling you, or which old pipe arrangement is already failing. This 60-page manual closes that gap before a small leak becomes an emergency call.
This is not a license to tear into concealed plumbing or ignore a qualified plumber. It is a homeowner’s field manual for seeing trouble early, shutting water off when needed, and asking better questions before work begins.
I · The math
This manual does not promise to turn you into a plumber. It gives you a defined inspection path for the parts of a residential system a homeowner can safely observe.
A slow drain gets ignored. A green fitting looks old but harmless. A plumber’s estimate arrives with work you cannot evaluate. In an emergency, you may lose time finding the shutoff while water keeps moving.
You can locate the meter and main shutoff, make a ten-minute pass for five expensive failures, recognize common bad arrangements, and use a 47-point checklist before a purchase, repair, or yearly walk-through.
| Now | With the book | |
|---|---|---|
| Visible failure check | A leak, corrosion, or bad connection gets noticed only after damage appears | Five common costly failures to look for in ten minutes |
| Emergency water control | You search for the shutoff after water is already running | You know how to identify the water meter and main shutoff beforehand |
| Drain symptoms | A gurgling toilet or slow sink is treated as an isolated nuisance | You can recognize the drain-waste-vent problems that commonly sit behind those symptoms |
| Older plumbing | Galvanized lines and old trap arrangements are hard to judge | You know the warning signs that call for a closer look or qualified repair |
| Repair decisions | An estimate gives you no clear basis for questions | You can read the scope, identify what needs explaining, and avoid guessing |
The gain is a repeatable way to spot visible problems early and know when to stop and call for qualified help.
II · Inside the book
Start with the five failures that deserve your attention, then work through shutoffs, drains, old supply lines, estimates, emergency limits, and the inspection routine. The manual includes 8 chapters and 60 pages of homeowner-level checks.
A prioritized checklist of five specific visual indicators (galvanized supply corrosion, main stack base cracks, sewer line bellies, inadequate venting, and cross-connection hazards) with photos, locations to check, and cost ranges if ignored.
A hand-drawn map of the reader's own water service entry, meter location, shutoff valve location, and the procedure to verify the shutoff actually stops water flow. The reader will know whether their shutoff valve works before they need it.
A decision tree that maps symptoms (gurgling, slow drainage, sewer gas smell, multiple fixture backup) to root causes (clog, vent blockage, trap seal loss, or main line failure) and the correct next step for each.
A photo-referenced list of ten common code violations (S-traps, double traps, crown venting, trap arms that are too long, missing cleanouts, undersized vents, AAVs in conditioned space, galvanized drain repurposing, shared wet venting, and non-code fixture spacing) with the risk level of each and the correction procedure.
A go/no-go decision framework based on installation date, water pressure, rust indicators, and flow test results. The reader will know whether to budget for replacement this year, in three years, or to leave the system alone.
A line-by-line estimate review checklist with questions to ask for each common plumbing repair (drain clearing, fixture replacement, pipe repair, water heater service, sump pump replacement). The reader will know what is fair, what is padded, and what is a red flag.
Step-by-step procedures for three emergency repairs (shutting off water and replacing a supply line, stopping a toilet overflow and replacing the flapper, tightening or replacing a leaking fixture shutoff) and explicit warnings for two scenarios where DIY makes it worse (gas water heater repairs and main sewer line work).
Two checklists (annual homeowner self-inspection and pre-purchase walkthrough) with 47 checkpoints total, organized by system (supply, waste, venting, fixtures, water heater, sewer line), each with a pass/fail criterion and a consequence if failed.
III · Who wrote it
IV · The offer
You are buying a defined inspection routine, not a pile of plumbing trivia. The manual gives you the order of operations, the visible signs to check, and the boundaries for work that should remain with a qualified plumber. The included references remove the work of building your own list from scattered videos and search results.
It can repay its price the first time you avoid unnecessary work
What you get for $27:
Behind The Wall · A Field Guide · No. I · MMXXVI
The 47-point walkthrough Carl used on every residential final inspection, adapted for homeowner use before buying or after a repair.
Annotated photos of the fifteen most common residential plumbing code violations Carl red-tagged, with explanations of why each one fails and how to correct it.
Every future revision of this book, free. When a checklist tightens or a price moves, the new edition reaches you at no charge.
Instant download · PDF · 60 pages
Published by Handover Books · secure checkout · your statement will show Handover Books
Read the manual and inspect the material for 30 days. If it is not useful for understanding the plumbing you can see in your own home, request a refund within the 30-day guarantee period.
V · Questions
Yes. It is written for homeowners who need to understand what they can observe: shutoffs, meters, exposed supply lines, drains, traps, visible corrosion, and common warning signs. It also states where a homeowner should stop and bring in a qualified plumber.
Yes. Older homes are specifically covered through galvanized supply lines, old trap arrangements, and common code violations still found in existing houses. Local systems and past alterations vary, so use the manual as a way to identify questions and visible concerns, not as a substitute for an on-site inspection.
No. The photo reference explains common violations Carl encountered and why they matter, but local code enforcement and permitted work are handled by your local authority and qualified tradespeople.
It is an instant-download PDF. The main manual is 60 pages, and the included checklist and photo reference are also supplied as PDFs.
You have 30 days to review it. If it does not help you understand the visible plumbing concerns in your home, request a refund within that period.
Most plumbing disasters leave signs first: corrosion, poor drainage, bad connections, neglected shutoffs, and work that was never right to begin with. Learn the checks Carl used to separate a minor concern from a problem that needs attention.
Get the manual · $27