๐Ÿ“˜ Guides โ€บ ๐Ÿ  Shelter & building ยท ๐Ÿ†˜ Emergency ยท ๐Ÿ“‡ Index Aโ€“Z

๐Ÿ  Shelter, Building & Repair

The best shelter you will ever have is the house you already live in โ€” if you keep the water out. This guide covers keeping an existing house sound (roof leaks, flashing, gutters, rot and insects), heating one warm room, reglazing windows, durable local woods, hand-tool carpentry, splitting your own shakes, drying lumber, log and earth building, chimneys, earthquake and wildfire hardening, and emergency tarp shelters. The books are in Shelter-Building\ (House-Repair, Carpentry-Timber, Earth-Natural-Building, Wildfire-Quake-Hardening). Hand tools and saws are in Blacksmithing-Tools\Hand-Tools; quake and fire guides are in Earthquake-Tsunami\ and Wildfire\; cob, straw bale, light straw-clay, hempcrete, earth and lime plasters, making lime and thatch are in the Natural Building guide and Natural-Building\.

โš ๏ธ Rules that prevent the worst outcomes


๐Ÿš๏ธ Finding and patching roof leaks

Inspect the roof regularly for breaks, missing shingles, choked gutters and damaged flashing (USDA FB 1751, p. 22) โ€” every fall before the rains, and after big storms (rule of thumb).

Finding the leak (p. 22):

Emergency patches:

Illinois Valley: our wet winters grow moss and lichen on roofs, and overhanging branches keep shingles wet. Both shorten a wood roof's life (NPS Brief 19, p. 6). Cut back limbs over the roof โ€” that helps in fire season too.

๐Ÿ“š Go deeper: USDA FB 1751 Roof Coverings for Farm Buildings โ€” finding leaks and repairing every kind of roof; FM 5-426 Carpentry โ€” roofing and flashing details. Pictures: scaffolds for roof work, FB 1751 p. 13, Roof shingle.

๐Ÿ’ง Flashing, gutters and keeping water away

Roofs leak most where two surfaces meet: valleys, chimneys, dormers and walls. Flash these with galvanized or copper sheet (FM 5-426, p. 119; valleys at p. 124; valley flashing drawings (ignore its red-lead paint); chimney flashing). Flashing over window and door heads should run at least 4 in up behind the siding above the drip cap (USDA AH 73, p. 163; where flashing goes).

A brick chimney coming through a sloping roof, with metal base flashings under the shingles, cap flashings set into the mortar joints over them, and a small peaked cricket on the uphill side Base flashings under the shingles, cap flashings in the mortar joints lapping over them, and a cricket to shed water behind the chimney (USDA FB 1889, p. 12).

Move the water away from the house (AH 73, pp. 8โ€“9, 169):

๐Ÿ“š Go deeper: USDA Wood-Frame House Construction (AH 73) โ€” illustrated flashing, gutters, foundations and crawl spaces; FM 5-426 โ€” valley flashing. Pictures: Flashing, Rain gutter, gutters and downspouts, AH 73 p. 168, eaves troughs and downspout fittings, FB 1751 p. 31.

๐Ÿ”ฅ One warm room: drafts, plastic and heat

With little fuel, heat one room, not the house. The relief-shelter order of priorities in winter (IFRC/Oxfam Plastic Sheeting, p. 30):

  1. Clothing and bedding first.
  2. Waterproofing (the roof).
  3. Bedding up off the damp floor.
  4. Windproofing.
  5. Then heat one room. Make a plastic-curtained buffer (a lobby) between the warm room and the cold rest of the house. Insulate floors and walls with straw sandwiched between plastic. Treat any stove in a small room as a fire risk.

Seal the drafts (HUD, In the Bank or Up the Chimney, pp. 36โ€“37; caulking drawings):

Plastic storm windows (HUD, p. 42): tape clear plastic over the inside of the window frame (easier, and it lasts longer), or tack it outside with 1/4 ร— 1 1/4 in wood slats. Pull it tight and trim the extra.

Heaters without a chimney make carbon monoxide. Leave 1 sq in of open window for every 1,000 Btu of heater output. A 9,100-Btu heater in a room with a 24-in window means opening it almost 1/2 in (MSU E-1669, p. 3).

No fuel at all? Insulate the people: towels, paper bags and layers of newspaper held under old raincoats and shirts (Kearny, p. 130).

๐Ÿ“š Go deeper: HUD In the Bank or Up the Chimney โ€” caulking, weatherstripping and insulation, step by step; IFRC/Oxfam Plastic Sheeting โ€” warm rooms in winter; CMHC wood-heating guide โ€” stove and pipe safety. Pictures: weatherstripping types, HUD p. 38, Weatherstripping, Kerosene heater.

๐ŸชŸ Reglazing and saving windows

โš ๏ธ Paint on windows made before 1978 almost certainly contains lead. Don't sand it dry or heat it until it scorches. Scrape it wet, collect the chips, and keep children away (rule of thumb).

Replacing a pane (NPS Brief 9, p. 5; window parts named):

  1. Dig out the old putty without gouging the wood. Soaking the glass in linseed oil loosens putty stuck to it.
  2. Pull the glazing points (the small metal tabs) and lift out the glass.
  3. Lay a thin bed of putty in the rabbet (the groove the glass sits in) and press the pane in.
  4. Push in new glazing points.
  5. Run a final bead of putty and bevel it with a putty knife so water runs off.
  6. Paint when the putty skins over, usually in 2โ€“3 days. Lap the paint slightly onto the glass to seal it.

Where window rot starts: the sill, the sill-to-jamb joints, the bottom-rail corners and the muntin (glass-bar) joints โ€” wherever water sits. The sill must slope outward. Cracked putty lets water soak the joints (NPS Brief 9, p. 2).

Saving partly rotted wood: let it dry, brush on 2โ€“3 coats of boiled linseed oil, 24 hours apart, fill cracks with putty, then paint (p. 5). Rags soaked in linseed oil can catch fire by themselves โ€” dry them spread flat outdoors or keep them in a can of water (rule of thumb).

๐Ÿ“š Go deeper: NPS Preservation Brief 9 โ€” reglazing, sash cords, weatherstripping and sill repair. Pictures: Putty, Sash window, Putty knife.

๐Ÿœ Rot, termites, carpenter ants โ€” and woods that last

Dry wood does not rot. Decay needs wood wetter than about 30% moisture. Air-dried wood is at or below 20%, and decay already in the wood stops if it's kept dry (Wood Handbook, p. 314; rot fungi).

What rots houses and draws termites (USDA FB 1993, p. 7): wet, unventilated crawl spaces; scrap wood left on the soil; wood touching soil (especially dirt-filled porches); wood buried in masonry near the ground; no gutters or roof overhang; roof and plumbing leaks.

The fixes (FB 1993, p. 3): no wood touching soil, an 18-in crawl space, vents on opposite sides (or roll roofing laid over the soil), and an inspection every winter or early spring. Termites build earthen tubes up foundations (photo): break them, and block the route with mortar or pitch.

Carpenter ants (USFS R10-TP-128, pp. 4, 7; winged ants):

Which woods last (heartwood only; Wood Handbook, Table 14-1, p. 316):

Decay resistance Western species
Very resistant Pacific yew
Resistant Port-Orford-cedar, incense-cedar, western redcedar, junipers, white oaks, old-growth redwood
Moderately resistant Douglas-fir, western larch
Slightly or not resistant True firs, hemlocks, red alder, maples, tanoak, cottonwood, most pines

Locally, Port-Orford-cedar and incense-cedar grow in the valley and the Siskiyous. Use their heartwood for sills, posts, shakes and anything touching the ground. Port-Orford-cedar killed by root disease still has sound, durable heartwood (rule of thumb).

๐Ÿ“š Go deeper: USDA FB 1993 Decay and Termite Damage in Houses โ€” spotting decay and termite tubes (ignore its poisons); Wood Handbook ch. 14 โ€” decay, insects and durable species; USFS Carpenter Ants โ€” finding the nest. Pictures: Carpenter ant, Termite, Wood-decay fungus, termite or winged ant? FB 1993 p. 5.

๐Ÿชš Hand-tool carpentry and drying lumber

Square a corner with 6-8-10 (FM 5-426, p. 48; the same idea with 3-4-5):

  1. Measure 6 ft along one line and 8 ft along the other.
  2. Move the lines until the diagonal between those two marks is exactly 10 ft. Never use less than 6 ft.
  3. When the whole rectangle is laid out, check that both diagonals are equal (drawing). Batter boards hold the lines (p. 46; batter boards).

Left: two string lines meeting at a corner, marked at 6 ft and 8 ft, with a 10-ft diagonal between the marks. Right: a laid-out rectangle with both diagonals drawn and equal 6 ft one way, 8 ft the other, exactly 10 ft across; then check that the diagonals match (a diagram drawn for this guide).

Handsaw basics (Disston, p. 10): start on the waste side of the line with your thumb against the blade, and draw back a few times to make a groove. Crosscut at about 45ยฐ to the board with full-length strokes. Support the waste piece so it doesn't splinter off.

Hewing a log flat (An Ax to Grind, p. 52): hew green, freshly cut logs โ€” dry logs hew badly. Set the log on V-notched yokes about knee high. Snap a chalk line, score down to it with a single-bit axe, then flatten with a broadaxe (step-by-step drawings).

Roofs and joints: rafter lengths by the step-off method (FM 5-426, p. 108) or the steel square (Brace and Mayne, p. 199; rafter pitch); mortise-and-tenon joints (Griffith, p. 105; drawing).

Air-drying lumber (OCHA/IFRC/CARE Timber, pp. 45, 68):

Wood shrinks most along the growth rings, about half as much across them, and hardly at all along its length (Wood Handbook, p. 84). Green wood opens gaps as it dries.

๐Ÿ“š Go deeper: FM 5-426 Carpentry โ€” layout, framing, rafters and roofing; USFS Handtools for Trail Work, p. 46 โ€” adzes and broadaxes; Timber in Humanitarian Operations โ€” felling, drying and joining timber. Pictures: Broadaxe, Hewing, Adze, Wood drying, air-drying yard, Wood Handbook p. 317.

๐Ÿชต Splitting and laying your own shingles and shakes

Splitting (NPS Brief 19, p. 2):

  1. Cut the log into bolts as long as the shingle, then quarter them.
  2. Rive off thin boards along the grain with a froe and mallet (or an axe) (froe drawing; photos).
  3. For a taper, flip the bolt end-for-end after each split.
  4. Use heartwood only. Sapwood rots fast.
  5. Old shingles were 3/8โ€“3/4 in thick, 3โ€“8 in wide and 14โ€“36 in long, smoothed with a drawknife so rain doesn't sit in the grain.

If a split runs off to one side, start again from the other end of the billet and split back to meet it (Beard, p. 115).

Laying wood shingles (USDA FB 1751, pp. 6โ€“7) on a roof of 1/4 pitch or steeper (flatter roofs are hard to keep tight):

Shingle length Show to the weather
16 in 5 in
18 in 5 1/2 in
24 in 7 1/2 in

For our wet winters, nail shingles to spaced 1ร—4 slats (spaced the same as the exposure) instead of solid boards. Air reaches the underside so they dry out, and it takes less lumber (FB 1751, p. 6). A cedar roof on raised, ventilated battens lasted over 60 years in a harsh, wet climate (NPS Brief 19, p. 4).

Top: rows of wood shingles seen from above, 5 inches of each row showing, joints offset from the row below, two nails per shingle just above the next row's butt line. Bottom: a cut-through view of shingles lying on spaced 1ร—4 slats on a rafter, with a doubled first row overhanging the eave Exposure, joints, nails and spaced slats for 16-in shingles (a diagram drawn for this guide).

๐Ÿ“š Go deeper: NPS Preservation Brief 19 โ€” hand-split shingles and why wood roofs fail; Beard Shelters, Shacks and Shanties โ€” shakes and clapboards with only an axe. Pictures: Wood shingle, Shaving horse, shingles on slats, FB 1751 p. 6, hips and ridges, p. 7, historic roof details chart, NPS Brief 19 p. 5.

๐Ÿ•๏ธ Log buildings

Cutting the logs (USDA FB 1660, pp. 5โ€“6):

Foundations:

Notching: the common corner notches โ€” saddle, V, dovetail, square โ€” are drawn in NPS Brief 26, p. 5 and FB 1660, p. 12. Notches that cup upward hold rain and rot first (Brief 26, p. 9), so cut the notch in the underside of the upper log (rule of thumb).

Five log-cabin corner notches drawn side by side: saddle, V or steeple, full dovetail, half dovetail and square The common corner notches (NPS Brief 26, p. 5).

Chinking and daubing (NPS Brief 26, pp. 6, 12โ€“13; methods drawn) โ€” three layers:

  1. Blocking: wood slabs or stones wedged into the gap.
  2. Soft packing: moss, oakum or clay.
  3. Daub: clay mixed with lime, troweled on wet. Wet the joint first; mix only what you can use in about 30 minutes; don't daub in full sun, heat or frost (p. 13).

Cross-sections of two logs stacked with the gap between them filled four ways: wood strips nailed in; stone or wood blocking with clay packed around it and daub over; and daub held by nails or by wire mesh Drawing (b) is the three-layer method above: blocking, soft packing, then daub (NPS Brief 26, p. 13).

Daubing is the least durable part of a log building. Patching it is a seasonal chore (p. 12). Delay chinking as long as you can so the logs dry first (FB 1660, p. 12), and fit doors and windows only after the logs have shrunk (Wood Handbook, p. 84).

๐Ÿ“š Go deeper: Wicks Log Cabins and Cottages โ€” a cabin step by step; USDA FB 1660 Logs and Poles โ€” notching, chinking and pole buildings; NPS Brief 26 โ€” repairing rotted logs and daubing mixes. Pictures: Log cabin, Chinking, Log building, log-hewing tools, NPS Brief 26 p. 5.

๐Ÿงฑ Earth building โ€” with the Cascadia caution

โš ๏ธ Heavy, unreinforced earth walls can collapse in a big quake. The Peace Corps handbook calls for steel reinforcement in footings and walls in earthquake areas (Building Homes of Earth, pp. 70โ€“75). In southern Oregon, keep earth walls low, light and single-story, or use earth only as infill or inside walls within a braced wood frame (rule of thumb).

Ribbon test for building soil (Building Homes of Earth, pp. 24โ€“25; drawing): roll damp soil into a cigar shape and squeeze it out between thumb and finger into a ribbon.

Ribbon length What it means
8โ€“10 in Lots of clay โ€” walls last only if you stabilize or temper it
2โ€“4 in Medium clay โ€” often good
No ribbon Too little clay
Springs back like a sponge Organic topsoil โ€” unusable

Adobe bricks (USDA FB 1720, pp. 9โ€“10):

  1. Puddle clayey loam with water. Mix in no more than 1 part loose straw to 5 parts mud. Too much straw, or manure, weakens the brick.
  2. Mould the bricks (forms; step by step). After a few days, stand them on edge.
  3. Dry them 2โ€“3 weeks under cover from rain. Never let uncured brick freeze.
  4. Lay them in mud mortar with 1/2โ€“1 in joints.

Adobe works in wet climates only if the walls are kept dry and the site never floods (p. 3) โ€” so give it wide eaves and a raised foundation.

Rammed earth (USDA FB 1500, pp. 9, 11โ€“12):

Cob, straw bale, light straw-clay, hempcrete, earth and lime plasters: see the Natural Building guide.

๐Ÿ“š Go deeper: Peace Corps Handbook for Building Homes of Earth โ€” soil tests, blocks, footings and roofs; USDA FB 1720 Adobe โ€” mixing, curing and plasters; USDA FB 1500 Rammed Earth โ€” forms and rammers. Pictures: Adobe, Rammed earth, adobe footings, FB 1720 p. 13, rammed-earth forms, Peace Corps p. 120.

๐Ÿงฏ Chimneys and stovepipe

Building or checking a masonry chimney (USDA FB 1889; whole-chimney diagram):

Side views: a chimney rising at least 3 ft above a flat roof, and a chimney on a sloping roof rising at least 2 ft above a ridge that is within 10 ft of it How high the chimney must rise above the roof (a diagram drawn for this guide).

Single-wall stovepipe needs 18 in from anything that burns; only proper shielding allows less (CMHC, p. 36).

Repointing loose chimney mortar: rake it out and refill with 1 part portland cement, 1 part lime and 6 parts sand (FB 1751, p. 24). When cement runs out, use lime and sand, about 1:3 โ€” and keep hard cement off soft old brick (rule of thumb).

Cleaning and chimney fires: see the Firewood guide.

๐Ÿ“š Go deeper: USDA FB 1889 Fireplaces and Chimneys โ€” flues, footings, clearances and cleanouts; CMHC Guide to Residential Wood Heating โ€” current clearances. Pictures: Chimney, soot pocket and cleanout, FB 1889 p. 9 (ignore its asbestos insulation).

๐ŸŒŽ Earthquake and wildfire hardening

Earthquake (FEMA 232):

A crawl-space cripple wall on a concrete foundation, braced with a nailed plywood sheet, and new bolts with steel plate washers holding the sill to the foundation Sill bolts with steel plate washers, and plywood nailed over the cripple-wall studs (FEMA 232, p. 171).

Wildfire โ€” embers cause up to 90% of house ignitions and can fly miles ahead of a fire (OSFM, p. 5). They blow into vents and light the debris in gutters (FEMA P-737, p. 13):

๐Ÿ“š Go deeper: FEMA 232 ch. 9 โ€” retrofitting existing houses; Living on Shaky Ground โ€” Oregon's checklist; FEMA P-737 โ€” vents, roofs, decks, windows and siding; Oregon Home Hardening Guide. Pictures: Seismic retrofit, Ember, chimney quake damage, FEMA 232 p. 144, gutter debris and leaf guards, FEMA P-737 p. 45.

๐Ÿ”ฅ More on embers, vents, clearing and defending the house: the Wildfire guide.

โ›บ Emergency tarp and plastic shelters

Fixing plastic so it doesn't tear (IFRC/Oxfam Plastic Sheeting, p. 26):

Keep it tight and sloped (p. 29): a loose sheet flaps in the wind and holds puddles, and both tear it. Keep nail heads flush, smooth anything that touches the plastic, and keep branches and hot metal (stovepipes) away.

Tarping a damaged roof (rule of thumb): run the tarp over the ridge so rain can't get under its top edge, and hold it down with battens nailed through it, not with nails alone.

Out in the open: a poncho lean-to needs only a poncho, 2โ€“3 m of cord, three stakes and two trees (FM 21-76, p. 49; drawing). For fallout shelters, see the Nuclear Fallout guide.

๐Ÿ“š Go deeper: IFRC/Oxfam Plastic Sheeting โ€” fixing, repairs and warm rooms; Beard โ€” bark and brush lean-tos up to pole houses; Kearny Expedient Shelter Handbook โ€” quickly built earth-covered shelters.

โš ๏ธ Old advice in the library to ignore

๐Ÿ“š Go deeper: Wood Handbook ch. 14 โ€” durable species instead of poisons; Oregon Home Hardening Guide โ€” current vent rules.

๐Ÿ–ผ๏ธ Pictures & diagrams

Look before you try it. ๐Ÿ–ผ๏ธ = drawings in the books on this drive; ๐Ÿ“ท = photos in the offline Wikipedia.

Roofs, flashing and gutters

Drafts and windows

Rot and insects

Carpentry, hewing and shingles

Log and earth buildings

Chimneys, quakes, fire and tarps


โ†‘ Contents