Chapter 26 Exercises: Siding and Exterior Cladding

These exercises build a systematic understanding of your home's exterior cladding — what material it is, how it's performing, and what its vulnerabilities are. Many homeowners are surprised to discover that their "siding problem" is actually a drainage plane problem, or that their paint failure is a prep problem. These exercises help you distinguish between them.

Exercise 1: Identify Your Cladding Material

What you need: A close look at multiple areas of your exterior, a camera.

Instructions: Walk around your house and identify the exterior cladding on each wall (some houses have different materials on different elevations). For each material, determine:

  1. What is it? Vinyl siding (check by pressing — does it flex?), wood (painted or stained?), fiber cement (heavier, harder, paint that's factory-applied or field-applied?), stucco (rough or smooth masonry texture?), brick (veneer — can you see mortar joints and a consistent brick pattern?), or other?

  2. How old is it? Can you find records? Is the material consistent with the house's construction date?

  3. Is there more than one material? Many houses have siding on most of the wall and a different material as a base course, on gable ends, or as accent material.

Photograph each material from multiple distances — wide shot to show context, close shot to show texture and condition.

Exercise 2: Assess Your Cladding Condition

What you need: A flashlight, a screwdriver, close access to the wall at multiple points (step ladder may help), your camera.

Instructions: Walk each elevation and assess:

For vinyl siding: - Any cracked, broken, or missing panels? - Panels that have pulled away from the wall or are no longer interlocked? - Fading or chalking on south-facing elevations? - Gaps at J-channel around windows and doors?

For wood siding: - Any areas of paint failure (peeling, cracking, blistering)? - Probe suspected soft areas with a screwdriver at the bottom edges of boards and at any painted cracks - Any horizontal joints where water could be sitting? - Any areas where the siding contacts grade or mulch?

For fiber cement: - Any chips, cracks, or impact damage? - Examine cut ends at corners, around windows, and at grade-level courses — any swelling or paint delamination at ends? - Any areas where the sealant at butt joints has failed?

For stucco (traditional): - Any hairline cracks? Map their width and location (thin hairlines vs. structural-concern-width cracks) - Any staining from rust (reinforcing mesh rusting?) or brown streaks from windows? - Any areas that sound hollow when tapped (suggests delamination from the substrate)?

For EIFS (synthetic stucco): - Note any areas where the surface seems to flex when pressed gently - Check around windows and doors for any gap between the EIFS face and trim pieces - Note any staining that might indicate water movement behind the surface

Record all findings with photos and rough measurements of problem area sizes.

Exercise 3: The Drainage Plane Check — Windows and Doors

What you need: A flashlight, a mirror (to see into tight spaces), a credit card or thin probe.

Instructions: The drainage plane at window and door junctions is the highest-risk location in any wall assembly. Inspect three windows and one door:

  1. Look at the interface between the window frame and the siding: is there a J-channel or trim piece that integrates them? Is there a visible gap between them anywhere?
  2. At the sill (bottom of the window), is water directed away from the window? Many window sills are nearly horizontal — is there any flashing or drip edge below the sill that directs water out?
  3. At the head (top of the window), is there a head flashing or drip cap? Can you see it from outside? Run the thin probe between the casing above the window and the siding behind it — do you meet a hard metal edge (flashing), or does the probe pass freely behind the casing to the sheathing?
  4. At the sill of any window you can access from inside, is there any staining or discoloration on the interior casing or window frame that might suggest water infiltration?

Reflection: Missing head flashings over windows are one of the most common cladding-adjacent failures. If you found no head flashing visible on multiple windows, this is worth discussing with a contractor during any future re-siding project.

Exercise 4: Grade Clearance Check

What you need: A ruler or tape measure.

Instructions: At multiple locations around the house perimeter, measure the clearance between:

  1. The bottom of the siding (or the bottom course of cladding) and the soil or mulch surface below
  2. The bottom of any wood element (fascia, window sill, wood trim) and the soil surface

Standards: - Siding should be a minimum of 2 inches above soil (6 inches is recommended) - Wood elements (window sills, door casings, wood trim) should be 4–6 inches above soil minimum - In high-rain areas, more clearance is better

Note any locations where siding or wood elements contact or nearly contact soil. These are high-priority maintenance points.

Exercise 5: Paint Condition Survey

If your house has any painted exterior surface (wood, stucco, masonry, or previously painted fiber cement):

What you need: A camera, a scraper or putty knife for testing adhesion, a flashlight.

Instructions: Walk each painted elevation and assess:

  1. Chalking: Rub your hand on the painted surface. Is there powder on your hand? Light chalking is normal after 7+ years; heavy chalking indicates significant UV degradation.
  2. Adhesion: Use the putty knife to try to lift paint at an inconspicuous location. Does it come off in sheets (delamination/poor adhesion) or does it require significant force (well-adhered)?
  3. Film integrity: Are there cracks in the paint film? Are they hairline (normal check cracking) or wide/deep (structural movement or alligatoring)? Are there any areas of blistering or bubbling?
  4. Mildew: Black or gray staining, particularly on north-facing walls and shaded areas. Is the staining growing (mildew) or stable (dirt/mineral)?

Based on your assessment, estimate where your painted surfaces fall: - A (Excellent): 0–5 years post-painting, no significant degradation - B (Good): 5–10 years, normal chalking, minor joint cracking, mostly sound - C (Fair): 10–15 years, moderate chalking, cracking at joints, some adhesion loss at edges - D (Poor): 15+ years or poorly done, widespread failure, blistering, significant rot risk

Exercise 6: Research Your Cladding History

What you need: Building permits, home inspection reports, conversations with previous owners.

Instructions: Try to determine:

  1. Was the current cladding original to construction, or was it a replacement? When?
  2. Was the original cladding removed (full tear-off) or covered (re-side over)?
  3. Is there a layer of old siding under the current siding? (You may be able to detect this at corners where cut edges are visible, or near the foundation where the siding thickness is readable.)
  4. Was any house wrap installed between layers? (Especially relevant if re-sided over in the 1990s–2000s — older re-sides often skipped house wrap.)

This history affects your options for future re-siding work and helps you understand what the wall assembly actually looks like underneath what you see.

Exercise 7: DIY Paint Test on a Small Section

If your painted wood or fiber cement siding shows early-to-moderate paint failure:

What you need: TSP substitute cleaner, garden sprayer or sponge, scrapers of various types, sandpaper (80-grit and 120-grit), primer, test-area paint, painter's tape.

Instructions: Select a small inconspicuous area (perhaps 4 square feet on the side of the house):

  1. Clean the area with TSP substitute solution. Rinse thoroughly. Allow to dry completely (minimum 24 hours).
  2. Scrape all loose paint from the area. Test adhesion at the edges of remaining paint — it should be firmly bonded.
  3. Sand the scraped area and any rough edges smooth (80-grit, then 120-grit).
  4. Apply a coat of exterior oil-based spot primer to bare wood areas, or acrylic primer to areas with remaining paint.
  5. Apply one coat of exterior topcoat paint after primer has cured per label instructions.
  6. Observe over the next 3–6 months: does the test patch hold well, or does it peel back?

This exercise gives you real information about whether your prep process is adequate before committing to a full-house repaint.

Exercise 8: Stucco Crack Assessment

If your house has stucco:

What you need: A credit card, a probe, a flashlight, and a crack gauge (available at hardware stores for under $10, or use a ruler and careful measurement).

Instructions: Walk the stucco surfaces and map every crack you find:

  1. For each crack, measure its width at the widest point
  2. Determine the location: field of the wall, at a corner, at a window or door transition, at a horizontal material change?
  3. Probe the crack — does the probe pass through to a hollow behind? (Hollow areas indicate delamination from the substrate.)
  4. Is the crack clean (sharp edges) or spalled (edges crumbling)?

Classification: - Hairline cracks (under 1/16 inch): typically cosmetic, seal with elastomeric caulk and paint - Medium cracks (1/16–1/4 inch): evaluate for structural movement causes; seal with flexible sealant - Wide cracks (over 1/4 inch): investigate structural cause; professional assessment recommended - Cracks at every window corner in a pattern: normal shrinkage cracking in stucco; not structural, but seal to prevent water entry

Exercise 9: Check Brick Weep Holes

If your house has brick veneer:

What you need: A thin probe or wire, a flashlight.

Instructions: Walk the base course of the brick veneer (the bottom two or three courses at grade level) and examine every 4–6 feet for weep holes — intentionally open (unmortared) vertical joints that provide drainage for the wall cavity.

  1. Can you identify weep holes? They should appear as open vertical mortar joints between bricks at the bottom of the veneer.
  2. Are they open? Use the probe to verify — a proper weep hole should accept the probe without resistance.
  3. Are any weep holes blocked with mortar, caulk, or insect nests? Clear them with the probe or a drill bit.

Also check weep holes above windows (where a lintel or arch course transitions to the veneer above) — there should be weep holes at these horizontal transitions as well.

Exercise 10: Plan a Repainting or Re-siding Project

If your assessment identifies a need for major exterior work:

What you need: Your assessment notes from Exercises 1–6, written quotes from contractors.

Instructions: If you've determined that a repaint or re-siding project is warranted:

  1. Define the scope: Is this a full-house repaint? A specific elevation? New siding on one side only?
  2. For a repaint, research at least three exterior painting contractors. Ask each for a written scope that specifies: prep steps included, product specified (manufacturer, product line, sheen level), number of coats, and payment terms.
  3. For re-siding, research at least three siding contractors. Ask each for a written quote specifying: material manufacturer and product, gauge or thickness, whether old siding is removed or covered, house wrap specification, window and door flashing method, and any warranty terms.
  4. Compare the quotes side by side — not just the total price, but the scope and specification details.

Reflection: The most useful outcome of this exercise is often realizing how much variation exists in contractor proposals for the "same" job — and how that variation comes almost entirely from scope differences, not price gouging or generosity.

Your completed assessments from this chapter's exercises, combined with the roof and gutter assessments from Chapters 24 and 25, give you a comprehensive picture of your home's exterior envelope condition.